diff --git a/EXeExecutor.h b/EXeExecutor.h
index d41cf37..b6a1e4e 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -908,6 +908,8 @@ EXE_EXPORT bool ExePointCurveDistSide( const Point3d& ptP, int nCurveId, const V
                                        double* pdDist, Point3d& ptMin, int* pnSide) ;
 EXE_EXPORT bool ExePointSurfTmDist( const Point3d& ptP, int nStmId, int nRefType,
                                     double* pdDist, Point3d& ptMin, int* pnTria) ;
+EXE_EXPORT bool ExePointSurfBzDist( const Point3d& ptP, int nSbzId, int nRefType,
+                                    double* pdDist, Point3d& ptMin, Vector3d& vtN) ;
  
 // Geo Intersect
 EXE_EXPORT bool ExeLineCurveInters( const Point3d& ptP, const Vector3d& vtDir, const int nId, const int nRefType,