diff --git a/EGkVolZmap.h b/EGkVolZmap.h
index 76c534d..0a663a5 100644
--- a/EGkVolZmap.h
+++ b/EGkVolZmap.h
@@ -93,7 +93,7 @@ class __declspec( novtable) IVolZmap : public IGeoObj
       virtual int  GetPartMinDistFromPoint( const Point3d& ptP) const = 0 ;
       virtual bool AddSurfTm( const ISurfTriMesh* pStm) = 0 ;
       virtual bool SubtractSurfTm( const ISurfTriMesh* pStm) = 0 ;
-      virtual bool MakeUniform( double dToler) = 0 ;
+      virtual bool MakeUniform( double dToler, bool bIsExtensionFirst = true, int nToolNum = 0) = 0 ;
       virtual bool Offset( double dOffs, int nType) = 0 ;
 } ;
 
diff --git a/EXeExecutor.h b/EXeExecutor.h
index ce01091..41653c5 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -733,7 +733,7 @@ EXE_EXPORT bool ExeVolZmapMillingStep( int nId, const Point3d& ptPs, const Vecto
                                                 const Point3d& ptPe, const Vector3d& vtDe, const Vector3d& vtAe, int nRefType) ;
 EXE_EXPORT bool ExeCutVolZmapPlane( int nId, const Point3d& ptOn, const Vector3d& vtN, int nRefType) ;
 EXE_EXPORT bool ExeUpdateVolZmapByAddingSurfTm( int nVolZmapId, int nStmId) ;
-EXE_EXPORT bool ExeUniformVolZmap( int nVolZmapId, double dToler) ;
+EXE_EXPORT bool ExeUniformVolZmap( int nVolZmapId, double dToler, bool bExtensionFirst, int nToolNum) ;
 EXE_EXPORT bool ExeVolZMapOffset( int nId, double dDist, int nType) ;
 
 // GeomDB Get