diff --git a/API_GdbCreateSurf.cpp b/API_GdbCreateSurf.cpp
index fd7dcb3..95a2792 100644
--- a/API_GdbCreateSurf.cpp
+++ b/API_GdbCreateSurf.cpp
@@ -150,9 +150,9 @@ __stdcall EgtCreateSurfTmByRevolve( int nParentId, int nCrvId,
 int
 __stdcall EgtCreateSurfTmByScrewing( int nParentId, int nCrvId,
                                      const double ptAx[3], const double vtAx[3],
-                                     double dAngRotDeg, double dMove, double dLinTol, int nRefType)
+                                     double dAngRotDeg, double dMove, BOOL bCapEnds, double dLinTol, int nRefType)
 {
-   return ExeCreateSurfTmByScrewing( nParentId, nCrvId, ptAx, vtAx, dAngRotDeg, dMove, dLinTol, nRefType) ;
+   return ExeCreateSurfTmByScrewing( nParentId, nCrvId, ptAx, vtAx, dAngRotDeg, dMove, ( bCapEnds != FALSE), dLinTol, nRefType) ;
 }
 
 //-------------------------------------------------------------------------------
diff --git a/EgtInterface.rc b/EgtInterface.rc
index 715e5bb..d597f8c 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ