diff --git a/EGkCDeClosedSurfTmClosedSurfTm.h b/EGkCDeClosedSurfTmClosedSurfTm.h
index 011d3f6..f84a1fe 100644
--- a/EGkCDeClosedSurfTmClosedSurfTm.h
+++ b/EGkCDeClosedSurfTmClosedSurfTm.h
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------------
-//  EgalTech 2020-2020
+//  EgalTech 2020-2023
 //----------------------------------------------------------------------------
-// File :      EGkCDeSurfTmSurfTm.h      Data : 13.11.20    Versione : 
+// File :      EGkCDeClosedSurfTmClosedSurfTm.h      Data : 14.06.23    Versione : 2.5f3
 // Contenuto : Dichiarazione funzione verifica collisione tra
 //             SurfTm e SurfTm.
 //
@@ -27,4 +27,4 @@
 // di collisione o inconsistenza dei parametri di input.
 // Le due superfici devono essere espresse nel medesimo sistema di riferimento.
 // La distanza di sicurezza ha effetto solo se maggiore di EPS_SMALL.
-EGK_EXPORT bool CDeClosedSurfTmClosedSurfTm( const SurfTriMesh& SurfA, const SurfTriMesh& SurfB, double dSafeDist) ;
\ No newline at end of file
+EGK_EXPORT bool CDeClosedSurfTmClosedSurfTm( const ISurfTriMesh& SurfA, const ISurfTriMesh& SurfB, double dSafeDist) ;
diff --git a/EMkSimuGenConst.h b/EMkSimuGenConst.h
index 049acbd..50fe8c3 100644
--- a/EMkSimuGenConst.h
+++ b/EMkSimuGenConst.h
@@ -35,7 +35,8 @@ enum SimCollObjType { MCH_SIM_COB_NULL = 0,
                       MCH_SIM_COB_BOX = 1,
                       MCH_SIM_COB_CYL = 2,
                       MCH_SIM_COB_SPHE = 3,
-                      MCH_SIM_COB_CONE = 4} ;
+                      MCH_SIM_COB_CONE = 4,
+                      MCH_SIM_COB_POLY = 101} ;
 
 //------------------------ Stato di visualizzazione della macchina ------------
 enum MachLook { MCH_LOOK_NONE = -1,
diff --git a/EXeExecutor.h b/EXeExecutor.h
index c88c7a0..d82c2f4 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -792,6 +792,7 @@ EXE_EXPORT int  ExeCDeRectPrismoidSolid( const Frame3d& frPrismoid, double dBase
 EXE_EXPORT int  ExeCDeCylSolid( const Frame3d& frCyl, double dR, double dH, int nSolidId, double dSafeDist, int nRefType) ;
 EXE_EXPORT int  ExeCDeConeSolid( const Frame3d& frCone, double dR1, double dR2, double dH, int nSolidId, double dSafeDist, int nRefType) ;
 EXE_EXPORT int  ExeCDeSpheSolid( const Point3d& ptCen, double dR, int nSolidId, double dSafeDist, int nRefType) ;
+EXE_EXPORT int  ExeCDeSolidSolid( int nSolid1Id, int nSolid2Id, double dSafeDist) ;
 
 // Maximum Filler
 EXE_EXPORT bool ExeMaxFillerStart( void) ;