diff --git a/EXeExecutor.h b/EXeExecutor.h
index 8ec317b..9a244ad 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -376,7 +376,7 @@ EXE_EXPORT int  ExeCreateBezierSphere( int nParentId, const Point3d& ptCenter, d
 EXE_EXPORT int  ExeCreateSurfBezierTria2D( int nParentId, int nSurfBzId, int nTextHeight, bool bShowTrim, int* pnCount) ;
 EXE_EXPORT int  ExeCreateSurfBzByFlatContour( int nParentId, int nCrvId, double dLinTol) ;
 EXE_EXPORT int  ExeCreateSurfBzByRegion( int nParentId, const INTVECTOR& vCrvId, double dLinTol) ;
-EXE_EXPORT int  ExeCreateSurfBzByExtrusion( int nParentId, const INTVECTOR& vCrvIds, const Vector3d& vtExtr,
+EXE_EXPORT int  ExeCreateSurfBzByExtrusion( int nParentId, const INTVECTOR& vCrvIds, const Vector3d& vtExtr, bool bCapEnds,
                                             double dLinTol, int nRefType) ;
 EXE_EXPORT int  ExeCreateSurfBzByScrewing( int nParentId, int nCrvId,
                                            const Point3d& ptAx, const Vector3d& vtAx,