diff --git a/EXeExecutor.h b/EXeExecutor.h
index 4d750bd..e68e9a7 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -697,6 +697,7 @@ EXE_EXPORT int ExeSurfFrGetZigZagInfill( int nId, int nDestGrpId, double dStep,
 // GeomDb Curve Get
 EXE_EXPORT bool ExeCurveDomain( int nId, double* pdStart, double* pdEnd) ;
 EXE_EXPORT bool ExeCurveLength( int nId, double* pdLen) ;
+EXE_EXPORT bool ExeCurveLengthAtParam( int nId, double dPar, double* pdLen) ;
 EXE_EXPORT bool ExeCurveParamAtLength( int nId, double dLen, double* pdPar) ;
 EXE_EXPORT bool ExeCurveParamAtPoint( int nId, const Point3d& pt, double dTol, int nRefType, double* pdPar) ;
 EXE_EXPORT bool ExeCurveLengthAtPoint( int nId, const Point3d& ptOn, double dExtend, double* pdLen) ;