diff --git a/EXeExecutor.h b/EXeExecutor.h
index f5f933b..1f844a3 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -609,6 +609,7 @@ EXE_EXPORT bool ExeTextGetItalic( int nId, bool& bItl) ;
 // GeomDb Curve Get
 EXE_EXPORT bool ExeCurveDomain( int nId, double* pdStart, double* pdEnd) ;
 EXE_EXPORT bool ExeCurveLength( int nId, double* pdLen) ;
+EXE_EXPORT bool ExeCurveParamAtLength( int nId, double dLen, double* pdPar) ;
 EXE_EXPORT bool ExeCurveLengthAtPoint( int nId, const Point3d& ptOn, double dExtend, double* pdLen) ;
 EXE_EXPORT bool ExeCurveIsClosed( int nId) ;
 EXE_EXPORT bool ExeCurveIsFlat( int nId, Plane3d& Plane, bool bUseExtrusion = true, double dToler = EPS_SMALL) ;