diff --git a/EGkStmFromCurves.h b/EGkStmFromCurves.h
index 42583c6..8abc862 100644
--- a/EGkStmFromCurves.h
+++ b/EGkStmFromCurves.h
@@ -49,3 +49,4 @@ EGK_EXPORT ISurfTriMesh* GetSurfTriMeshTransSwept( const ICurve* pSect, const IC
 EGK_EXPORT ISurfTriMesh* GetSurfTriMeshRuled( const Point3d& ptP, const ICurve* pCurve, double dLinTol = 10 * EPS_SMALL) ;
 EGK_EXPORT ISurfTriMesh* GetSurfTriMeshRuled( const ICurve* pCurve1, const ICurve* pCurve2, int nType, double dLinTol = 10 * EPS_SMALL) ;
 EGK_EXPORT ISurfTriMesh* GetSurfExtension( const ISurfTriMesh* pSrfTM, double dExtLen, int nLoop, int nSubCrv, int nType, double dLinTol) ;
+EGK_EXPORT ISurfTriMesh* GetSurfExtensionFromMany( CISURFPVECTOR vpSurf, double dExtLen, const ICurve* pCrv, ICurve*& pOffEdge, int nType, double dLinTol) ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 4b028ed..e46a096 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -434,6 +434,8 @@ EXE_EXPORT int  ExeCreateSurfBzSwept( int nParentId, int nSectId, int nGuideId,
                                       bool bCapEnds, double dLinTol, int nRefType) ;
 EXE_EXPORT int  ExeCreateSurfExtension( int nParentId, int nSurfId, double dExtLen, int nCrv, int nSubCrv,
                                         int nType, double dLinTol) ;
+EXE_EXPORT int  ExeCreateSurfExtensionFromMany( int nParentId, const INTVECTOR& vSurfId, double dExtLen, int nCrvId,
+                                                bool bDrawOffEdge, int* pnCount, int nType, double dLinTol) ;
 
 // GeomDB Create Volume
 EXE_EXPORT int  ExeCreateVolZmap( int nParentId, const Point3d& ptIni, double dDimX,