diff --git a/PolymakeInterface/src/polymake_cone.cpp b/PolymakeInterface/src/polymake_cone.cpp
index 6c17f49d..637266a0 100644
--- a/PolymakeInterface/src/polymake_cone.cpp
+++ b/PolymakeInterface/src/polymake_cone.cpp
@@ -110,16 +110,16 @@ Obj REAL_GENERATING_RAYS_OF_CONE( Polymake_Data* data, Obj cone){
   matr2 = -matr2;
   Obj RETLI3 = GAP_MATRIX_POLYMAKE_INTEGER_MATRIX( &matr2 );
   
-  int len1 = LEN_PLIST( RETLI1 );
-  int len2 = LEN_PLIST( RETLI2 );
+  Int len1 = LEN_PLIST( RETLI1 );
+  Int len2 = LEN_PLIST( RETLI2 );
   
   Obj RETLI = NEW_PLIST( T_PLIST, len1 + 2*len2 );
   SET_LEN_PLIST( RETLI, len1 + 2*len2 );
   
-  for( int i = 1; i <= len1; i++ )
+  for( Int i = 1; i <= len1; i++ )
     SET_ELM_PLIST( RETLI, i, ELM_PLIST( RETLI1, i ) );
   
-  for( int i = 1; i <= len2; i++ ){
+  for( Int i = 1; i <= len2; i++ ){
     SET_ELM_PLIST( RETLI, len1 + i, ELM_PLIST( RETLI2, i ) );
     SET_ELM_PLIST( RETLI,  len1 + len2 + i, ELM_PLIST( RETLI3, i ) );
   }
@@ -168,7 +168,7 @@ Obj REAL_HILBERT_BASIS_OF_CONE( Polymake_Data* data, Obj cone){
   polymake::Array<polymake::Matrix<polymake::Integer>> arr;
   try
   {
-     arr = coneobj->give("HILBERT_BASIS_GENERATORS");
+     coneobj->give("HILBERT_BASIS_GENERATORS") >> arr;
   }
 
   POLYMAKE_GAP_CATCH
@@ -232,16 +232,16 @@ Obj REAL_DEFINING_INEQUALITIES_OF_CONE( Polymake_Data* data, Obj cone){
   matr2 = -matr2;
   Obj RETLI3 = GAP_MATRIX_POLYMAKE_INTEGER_MATRIX( &matr2 );
   
-  int len1 = LEN_PLIST( RETLI1 );
-  int len2 = LEN_PLIST( RETLI2 );
+  Int len1 = LEN_PLIST( RETLI1 );
+  Int len2 = LEN_PLIST( RETLI2 );
   
   Obj RETLI = NEW_PLIST( T_PLIST, len1 + 2*len2 );
   SET_LEN_PLIST( RETLI, len1 + 2*len2 );
   
-  for( int i = 1; i <= len1; i++ )
+  for( Int i = 1; i <= len1; i++ )
     SET_ELM_PLIST( RETLI, i, ELM_PLIST( RETLI1, i ) );
   
-  for( int i = 1; i <= len2; i++ ){
+  for( Int i = 1; i <= len2; i++ ){
     SET_ELM_PLIST( RETLI, len1 + i, ELM_PLIST( RETLI2, i ) );
     SET_ELM_PLIST( RETLI,  len1 + len2 + i, ELM_PLIST( RETLI3, i ) );
   }
diff --git a/PolymakeInterface/src/polymake_data.cpp b/PolymakeInterface/src/polymake_data.cpp
index 3fc25241..ea3a4ed7 100644
--- a/PolymakeInterface/src/polymake_data.cpp
+++ b/PolymakeInterface/src/polymake_data.cpp
@@ -50,7 +50,7 @@ Obj ExternalPolymakeObjectTypeFunc(Obj o) {
 void polymake_start( Polymake_Data* data ){
     if( ! data->initialized ){
       data->main_polymake_session = new polymake::Main;
-      data->main_polymake_scope = new polymake::perl::Scope(data->main_polymake_session->newScope());
+      data->main_polymake_scope = new pm::perl::Scope(data->main_polymake_session->newScope());
       data->initialized = true;
     }
     return;
diff --git a/PolymakeInterface/src/polymake_data.h b/PolymakeInterface/src/polymake_data.h
index b7d678ed..fcc3543c 100644
--- a/PolymakeInterface/src/polymake_data.h
+++ b/PolymakeInterface/src/polymake_data.h
@@ -30,15 +30,15 @@ extern Obj TheTypeExternalPolymakeTropicalHypersurface;
 extern Obj TheTypeExternalPolymakeTropicalPolytope;
 extern Obj TheTypeExternalPolymakeMatroid;
 
-typedef pair<int, polymake::perl::Object*> object_pair;
-typedef polymake::perl::Object perlobj;
-typedef map<int, polymake::perl::Object*>::iterator iterator;
+typedef pair<int, pm::perl::BigObject*> object_pair;
+typedef pm::perl::BigObject perlobj;
+typedef map<int, pm::perl::BigObject*>::iterator iterator;
 
 struct Polymake_Data {
    bool initialized;
    polymake::Main *main_polymake_session;
-   polymake::perl::Scope *main_polymake_scope;
-   map<int, polymake::perl::Object*> *polymake_objects;
+   pm::perl::Scope *main_polymake_scope;
+   map<int, pm::perl::BigObject*> *polymake_objects;
    int new_polymake_object_number;
 };
 
diff --git a/PolymakeInterface/src/polymake_fan.cpp b/PolymakeInterface/src/polymake_fan.cpp
index 6ea650c8..43c2e982 100644
--- a/PolymakeInterface/src/polymake_fan.cpp
+++ b/PolymakeInterface/src/polymake_fan.cpp
@@ -8,14 +8,14 @@ Obj REAL_FAN_BY_CONES( Polymake_Data* data, Obj cones ){
     return NULL;
   }
   
-  int numberofcones = LEN_PLIST( cones );
+  Int numberofcones = LEN_PLIST( cones );
   Obj akt;
   Obj elem;
   Obj numb;
-  int numberofrays = 0;
+  Int numberofrays = 0;
   data->main_polymake_session->set_application("fan");
   
-  for(int i=1;i<=numberofcones;i++){
+  for(Int i=1;i<=numberofcones;i++){
       akt = ELM_PLIST( cones, i );
 #ifdef MORE_TESTS
       if( !IS_PLIST( akt ) ){
@@ -27,15 +27,15 @@ Obj REAL_FAN_BY_CONES( Polymake_Data* data, Obj cones ){
   
   }
   
-  int dimension = LEN_PLIST( ELM_PLIST( ELM_PLIST( cones, 1 ), 1 ) );
-  polymake::Array<polymake::Set<int>> incMatr(numberofcones);
+  Int dimension = LEN_PLIST( ELM_PLIST( ELM_PLIST( cones, 1 ), 1 ) );
+  polymake::Array<polymake::Set<Int>> incMatr(numberofcones);
   polymake::Matrix<polymake::Rational> matr(numberofrays+1,dimension);
-  int raycounter = 1;
-  for(int i = 1; i <= numberofcones; i++){
+  Int raycounter = 1;
+  for(Int i = 1; i <= numberofcones; i++){
         akt = ELM_PLIST( cones, i );
-        for( int j = 1; j <= LEN_PLIST( akt ); j++){
+        for( Int j = 1; j <= LEN_PLIST( akt ); j++){
             elem = ELM_PLIST( akt, j );
-            for( int k = 1; k <= LEN_PLIST( elem ); k++){
+            for( Int k = 1; k <= LEN_PLIST( elem ); k++){
                 numb = ELM_PLIST( elem, k );
                 
 #ifdef MORE_TESTS
@@ -75,9 +75,9 @@ Obj REAL_FAN_BY_RAYS_AND_CONES( Polymake_Data* data, Obj rays, Obj cones ){
   
   POLYMAKE_RATIONAL_MATRIX_GAP_MATRIX( &matr, rays );
   
-  int numberofcones = LEN_PLIST( cones );
-  polymake::Array<polymake::Set<int>> incMatr(numberofcones);
-  for(int i=0;i<numberofcones;i++){
+  Int numberofcones = LEN_PLIST( cones );
+  polymake::Array<polymake::Set<Int>> incMatr(numberofcones);
+  for(Int i=0;i<numberofcones;i++){
       akt = ELM_PLIST( cones, i+1 );
 #ifdef MORE_TESTS
       if( !IS_PLIST( akt ) ){
@@ -85,7 +85,7 @@ Obj REAL_FAN_BY_RAYS_AND_CONES( Polymake_Data* data, Obj rays, Obj cones ){
         return NULL;
       }
 #endif
-      for(int j = 0; j < LEN_PLIST( akt ) ; j++){
+      for(Int j = 0; j < LEN_PLIST( akt ) ; j++){
         numb = ELM_PLIST( akt, j+1 );
 #ifdef MORE_TESTS
         if( ! IS_INTOBJ( numb ) ){
@@ -93,7 +93,7 @@ Obj REAL_FAN_BY_RAYS_AND_CONES( Polymake_Data* data, Obj rays, Obj cones ){
           return NULL;
         }
 #endif
-        incMatr[i] += static_cast<int>(INT_INTOBJ( numb ) - 1);
+        incMatr[i] += static_cast<Int>(INT_INTOBJ( numb ) - 1);
       }
   }
 
@@ -123,9 +123,9 @@ Obj REAL_FAN_BY_RAYS_AND_CONES_UNSAVE( Polymake_Data* data, Obj rays, Obj cones
   polymake::Matrix<polymake::Rational> matr(0,0);
   POLYMAKE_RATIONAL_MATRIX_GAP_MATRIX( &matr, rays );
   
-  int numberofcones = LEN_PLIST( cones );
+  Int numberofcones = LEN_PLIST( cones );
   polymake::IncidenceMatrix<> incMatr(numberofcones,matr.rows());
-  for(int i=0;i<numberofcones;i++){
+  for(Int i=0;i<numberofcones;i++){
       akt = ELM_PLIST( cones, i+1 );
 #ifdef MORE_TESTS
       if( !IS_PLIST( akt ) ){
@@ -133,7 +133,7 @@ Obj REAL_FAN_BY_RAYS_AND_CONES_UNSAVE( Polymake_Data* data, Obj rays, Obj cones
         return NULL;
       }
 #endif
-      for(int j = 0; j < LEN_PLIST( akt ) ; j++){
+      for(Int j = 0; j < LEN_PLIST( akt ) ; j++){
         numb = ELM_PLIST( akt, j+1 );
 #ifdef MORE_TESTS
         if( ! IS_INTOBJ( numb ) ){
@@ -275,8 +275,8 @@ Obj REAL_F_VECTOR( Polymake_Data* data, Obj fan){
   UInt matr_rows = matr.size();
   Obj RETLI = NEW_PLIST( T_PLIST , matr.size() );
   SET_LEN_PLIST( RETLI , matr_rows );
-  for(int i = 0;i<matr.size(); i++){
-      SET_ELM_PLIST(RETLI,i+1,INTOBJ_INT( static_cast<int>(matr[i]) ));
+  for(Int i = 0;i<matr.size(); i++){
+      SET_ELM_PLIST(RETLI,i+1,INTOBJ_INT( static_cast<Int>(matr[i]) ));
       CHANGED_BAG(RETLI);
   }
   return RETLI;
diff --git a/PolymakeInterface/src/polymake_fktn.cpp b/PolymakeInterface/src/polymake_fktn.cpp
index c8e6ad8b..6ed28e25 100644
--- a/PolymakeInterface/src/polymake_fktn.cpp
+++ b/PolymakeInterface/src/polymake_fktn.cpp
@@ -120,12 +120,12 @@ Obj REAL_POLYMAKE_SKETCH_WITH_OPTIONS( Polymake_Data* data, Obj cone, Obj filena
   #endif
   perlobj* coneobj = PERLOBJ_POLYMAKEOBJ( cone );
   data->main_polymake_session->set_application_of(*coneobj);
-  polymake::perl::OptionSet sketch_options;
+  pm::perl::OptionSet sketch_options;
   if( IS_STRING( filename ) ){
     sketch_options["File"] << CSTR_STRING( filename );
   }
   
-  polymake::perl::OptionSet visual_options;
+  pm::perl::OptionSet visual_options;
   if( IS_PLIST( options ) ){
     for( int i = 1; i <= LEN_PLIST( options ); i++ ){
       Obj current_option = ELM_PLIST( options, i );
diff --git a/PolymakeInterface/src/polymake_fktn.h b/PolymakeInterface/src/polymake_fktn.h
index cabc6e12..e372c95e 100644
--- a/PolymakeInterface/src/polymake_fktn.h
+++ b/PolymakeInterface/src/polymake_fktn.h
@@ -23,7 +23,7 @@ using std::pair;
 // load the package.
 
 //static polymake::Main *main_polymake_session;
-//static polymake::perl::Scope *main_polymake_scope;
+//static pm::perl::Scope *main_polymake_scope;
 //static map<int, pm::perl::Object*> *polymake_objects;
 //static int new_polymake_object_number;
 
diff --git a/PolymakeInterface/src/polymake_main.cpp b/PolymakeInterface/src/polymake_main.cpp
index d4f45650..a114b932 100644
--- a/PolymakeInterface/src/polymake_main.cpp
+++ b/PolymakeInterface/src/polymake_main.cpp
@@ -490,7 +490,7 @@ Obj FuncPOLYMAKE_RESET_WORKSPACE( Obj self ){
   
   delete akt_data.main_polymake_session;
   akt_data.main_polymake_session = new polymake::Main;
-  akt_data.main_polymake_scope = new polymake::perl::Scope(akt_data.main_polymake_session->newScope());
+  akt_data.main_polymake_scope = new pm::perl::Scope(akt_data.main_polymake_session->newScope());
   
   return True;
   
@@ -827,7 +827,7 @@ static Int InitLibrary ( StructInitInfo *module )
 //     // We start with initialising the polymake classes.
 //     akt_data.initialized = false;
 // //     akt_data.main_polymake_session = new polymake::Main;
-// //     akt_data.main_polymake_scope = new polymake::perl::Scope(akt_data.main_polymake_session->newScope());
+// //     akt_data.main_polymake_scope = new pm::perl::Scope(akt_data.main_polymake_session->newScope());
 // //     akt_data.main_polymake_session->set_application("polytope");
 // //     akt_data.main_polymake_session->set_custom("$Verbose::scheduler",1);
 //     //This is pretty slow.
diff --git a/PolymakeInterface/src/polymake_matroid.cpp b/PolymakeInterface/src/polymake_matroid.cpp
index 5a92c09e..98d91896 100644
--- a/PolymakeInterface/src/polymake_matroid.cpp
+++ b/PolymakeInterface/src/polymake_matroid.cpp
@@ -30,17 +30,17 @@ Obj REAL_CREATE_MATROID_ABSTRACT( Polymake_Data* data, Obj size, Obj elements ){
     return NULL;
   }
   
-  int matroid_size = INT_INTOBJ( size );
+  Int matroid_size = INT_INTOBJ( size );
   
   if( ! IS_PLIST( elements ) ){
     ErrorMayQuit( "second argument is not a plain list", 0, 0);
     return NULL;
   }
   
-  int nr_of_basis = LEN_PLIST( elements );
-  polymake::Array<polymake::Set<int>> incMatr(nr_of_basis);
+  Int nr_of_basis = LEN_PLIST( elements );
+  polymake::Array<polymake::Set<Int>> incMatr(nr_of_basis);
   
-  for( int current_basis=1;current_basis<=nr_of_basis;current_basis++){
+  for( Int current_basis=1;current_basis<=nr_of_basis;current_basis++){
       
       Obj current_basis_list = ELM_PLIST( elements, current_basis );
       
@@ -49,10 +49,10 @@ Obj REAL_CREATE_MATROID_ABSTRACT( Polymake_Data* data, Obj size, Obj elements ){
         return NULL;
       }
       
-      int current_length = LEN_PLIST( current_basis_list );
+      Int current_length = LEN_PLIST( current_basis_list );
       
-      for( int i=1;i<=current_length;i++){
-          incMatr[current_basis] += static_cast<int>(INT_INTOBJ( ELM_PLIST( current_basis_list, i ) ) - 1);
+      for( Int i=1;i<=current_length;i++){
+          incMatr[current_basis] += static_cast<Int>(INT_INTOBJ( ELM_PLIST( current_basis_list, i ) ) - 1);
       }
       
   }
diff --git a/PolymakeInterface/src/polymake_polytopes.cpp b/PolymakeInterface/src/polymake_polytopes.cpp
index b82f9819..e7553ae5 100644
--- a/PolymakeInterface/src/polymake_polytopes.cpp
+++ b/PolymakeInterface/src/polymake_polytopes.cpp
@@ -11,7 +11,7 @@ Obj REAL_CREATE_POLYTOPE_BY_POINTS( Polymake_Data* data, Obj polytope ){
   }
 #endif
   
-  int len = LEN_PLIST( polytope );
+  Int len = LEN_PLIST( polytope );
   Obj akt = ELM_PLIST( polytope, 1 );
   Obj elem;
   
@@ -22,7 +22,7 @@ Obj REAL_CREATE_POLYTOPE_BY_POINTS( Polymake_Data* data, Obj polytope ){
   }
 #endif
 
-  int len_elem = LEN_PLIST( akt );
+  Int len_elem = LEN_PLIST( akt );
   data->main_polymake_session->set_application("polytope");
 
   polymake::Matrix<polymake::Rational> matr(len,len_elem+1);
@@ -96,7 +96,7 @@ Obj REAL_VERTICES_OF_POLYTOPE( Polymake_Data* data, Obj polytope){
       LIZeil = NEW_PLIST( T_PLIST, matr.cols()-1);
       SET_LEN_PLIST( LIZeil , matr_cols );
       for(int j = 1;j<matr.cols();j++){
-        SET_ELM_PLIST(LIZeil,j,INTOBJ_INT(static_cast<int>(matr(i,j))));
+        SET_ELM_PLIST(LIZeil,j,INTOBJ_INT(static_cast<Int>(matr(i,j))));
       }
       SET_ELM_PLIST(RETLI,k,LIZeil);
       CHANGED_BAG(RETLI);
@@ -123,7 +123,7 @@ Obj REAL_LATTICE_POINTS_OF_POLYTOPE( Polymake_Data* data, Obj polytope){
   data->main_polymake_session->set_application_of(*polyobj);
   polymake::Array<polymake::Matrix<polymake::Integer>> arr;
   try{
-      arr = polyobj->give("LATTICE_POINTS_GENERATORS");
+      polyobj->give("LATTICE_POINTS_GENERATORS") >> arr;
   }
 
   POLYMAKE_GAP_CATCH
@@ -138,7 +138,7 @@ Obj REAL_LATTICE_POINTS_OF_POLYTOPE( Polymake_Data* data, Obj polytope){
     LIZeil = NEW_PLIST( T_PLIST, matr.cols()-1);
     SET_LEN_PLIST( LIZeil , matr_cols );
     for(int j = 1;j<matr.cols();j++){
-      SET_ELM_PLIST(LIZeil,j,INTOBJ_INT(static_cast<int>(matr(i,j))));
+      SET_ELM_PLIST(LIZeil,j,INTOBJ_INT(static_cast<Int>(matr(i,j))));
     }
     SET_ELM_PLIST(RETLI,i+1,LIZeil);
     CHANGED_BAG(RETLI);
@@ -242,7 +242,7 @@ Obj REAL_INTERIOR_LATTICE_POINTS( Polymake_Data* data, Obj polytope){
     LIZeil = NEW_PLIST( T_PLIST, matr.cols()-1);
     SET_LEN_PLIST( LIZeil , matr_cols );
     for(int j = 1;j<matr.cols();j++){
-      SET_ELM_PLIST(LIZeil,j,INTOBJ_INT(static_cast<int>(matr(i,j))));
+      SET_ELM_PLIST(LIZeil,j,INTOBJ_INT(static_cast<Int>(matr(i,j))));
     }
     SET_ELM_PLIST(RETLI,i+1,LIZeil);
     CHANGED_BAG(RETLI);
@@ -327,7 +327,7 @@ Obj REAL_TAIL_CONE_OF_POLYTOPE( Polymake_Data* data, Obj polytope){
       LIZeil = NEW_PLIST( T_PLIST, matr.cols()-1);
       SET_LEN_PLIST( LIZeil , matr_cols );
       for(int j = 1;j<matr.cols();j++){
-        SET_ELM_PLIST(LIZeil,j, INTOBJ_INT( static_cast<int>(matr(i,j)) ) );
+        SET_ELM_PLIST(LIZeil,j, INTOBJ_INT( static_cast<Int>(matr(i,j)) ) );
       }
       SET_ELM_PLIST(RETLI,k,LIZeil);
       CHANGED_BAG(RETLI);
@@ -413,7 +413,7 @@ Obj REAL_LATTICE_POINTS_GENERATORS( Polymake_Data* data, Obj polytope ){
   data->main_polymake_session->set_application_of(*polyobj);
   polymake::Array<polymake::Matrix<polymake::Integer>> array;
   try{
-      array = polyobj->give("LATTICE_POINTS_GENERATORS");
+      polyobj->give("LATTICE_POINTS_GENERATORS") >> array;
   }
   
   POLYMAKE_GAP_CATCH
diff --git a/PolymakeInterface/src/polymake_templates.h b/PolymakeInterface/src/polymake_templates.h
index 5acfb733..82445aa9 100644
--- a/PolymakeInterface/src/polymake_templates.h
+++ b/PolymakeInterface/src/polymake_templates.h
@@ -18,7 +18,7 @@ using std::pair;
 template<typename T>
 void POLYMAKE_RATIONAL_MATRIX_GAP_MATRIX( T* polymake_matrix, Obj gap_matrix ){
   
-  int rows = LEN_PLIST( gap_matrix );
+  Int rows = LEN_PLIST( gap_matrix );
   Obj current = ELM_PLIST( gap_matrix, 1 );
   Obj elem;
   
@@ -29,7 +29,7 @@ void POLYMAKE_RATIONAL_MATRIX_GAP_MATRIX( T* polymake_matrix, Obj gap_matrix ){
   }
 #endif
   
-  int columns = LEN_PLIST( current );
+  Int columns = LEN_PLIST( current );
   
   polymake_matrix->resize( rows, columns );
   
@@ -72,7 +72,7 @@ Obj GAP_MATRIX_POLYMAKE_INTEGER_MATRIX( T* polymake_matrix ){
     LIZeil = NEW_PLIST( T_PLIST, polymake_matrix->cols() );
     SET_LEN_PLIST( LIZeil ,matr_cols);
     for(int j = 0;j<polymake_matrix->cols();j++){
-      SET_ELM_PLIST(LIZeil,j+1,INTOBJ_INT(static_cast<int>((*polymake_matrix)(i,j))));
+      SET_ELM_PLIST(LIZeil,j+1,INTOBJ_INT(static_cast<Int>((*polymake_matrix)(i,j))));
     }
     SET_ELM_PLIST(RETLI,i+1,LIZeil);
   }
diff --git a/PolymakeInterface/src/polymake_tropical.cpp b/PolymakeInterface/src/polymake_tropical.cpp
index cf3134d0..3d26fc61 100644
--- a/PolymakeInterface/src/polymake_tropical.cpp
+++ b/PolymakeInterface/src/polymake_tropical.cpp
@@ -11,7 +11,7 @@ Obj REAL_TROPICAL_HYPERSURFACE_BY_MONOMS_AND_COEFFICIENTS( Polymake_Data* data,
   }
 #endif
   
-  int len = LEN_PLIST( monomials );
+  Int len = LEN_PLIST( monomials );
   Obj akt = ELM_PLIST( monomials, 1 );
   Obj elem;
   
@@ -30,13 +30,13 @@ Obj REAL_TROPICAL_HYPERSURFACE_BY_MONOMS_AND_COEFFICIENTS( Polymake_Data* data,
 #endif
 
 
-  int len_elem = LEN_PLIST( akt );
+  Int len_elem = LEN_PLIST( akt );
   data->main_polymake_session->set_application("tropical");
 
-  polymake::Matrix<int> matr(len, len_elem);
-  polymake::Vector<int> coeff(len);
+  polymake::Matrix<Int> matr(len, len_elem);
+  polymake::Vector<Int> coeff(len);
 
-  for(int i=1;i<=len;i++){
+  for(Int i=1;i<=len;i++){
       akt = ELM_PLIST( monomials, i );
 #ifdef MORE_TESTS
       if( !IS_PLIST( akt ) ){
@@ -49,7 +49,7 @@ Obj REAL_TROPICAL_HYPERSURFACE_BY_MONOMS_AND_COEFFICIENTS( Polymake_Data* data,
       }
 #endif
 
-      for(int j = 1; j <= len_elem; j++){
+      for(Int j = 1; j <= len_elem; j++){
         elem = ELM_PLIST( akt, j);
 
 #ifdef MORE_TESTS
@@ -94,7 +94,7 @@ Obj REAL_MONOMIALS_OF_HYPERSURFACE( Polymake_Data* data, Obj hypersurf){
 
   perlobj* polyobj = PERLOBJ_POLYMAKEOBJ( hypersurf );
   data->main_polymake_session->set_application_of(*polyobj);
-  polymake::Matrix<int> matr;
+  polymake::Matrix<Int> matr;
   try{
     polyobj->give("MONOMIALS") >> matr;
   }