diff --git a/API_GdbModifyCurve.cpp b/API_GdbModifyCurve.cpp
index 4509320..7a6755f 100644
--- a/API_GdbModifyCurve.cpp
+++ b/API_GdbModifyCurve.cpp
@@ -202,6 +202,13 @@ __stdcall EgtCloseCurveCompo( int nId)
    return ( ExeCloseCurveCompo( nId) ? TRUE : FALSE) ;
 }
 
+//-------------------------------------------------------------------------------
+BOOL
+__stdcall EgtAddCurveCompoCurve( int nId, int nAddCrvId, BOOL bEraseOrig)
+{
+   return ( ExeAddCurveCompoCurve( nId, nAddCrvId, ( bEraseOrig != FALSE)) ? TRUE : FALSE) ;
+}
+
 //-------------------------------------------------------------------------------
 BOOL
 __stdcall EgtAddCurveCompoLine( int nId, const double ptP[3], int nRefType)