diff --git a/EMkMachMgr.h b/EMkMachMgr.h
index 5f49501..3befbad 100644
--- a/EMkMachMgr.h
+++ b/EMkMachMgr.h
@@ -196,6 +196,7 @@ class __declspec( novtable) IMachMgr
      // Machine Calc
       virtual bool SetCalcTable( const std::string& sTable) = 0 ;
       virtual bool SetCalcTool( const std::string& sTool, const std::string& sHead, int nExit) = 0 ;
+      virtual bool SetRotAxisBlock( const std::string& sAxis, double dVal) = 0 ;
       virtual bool GetCalcTool( std::string& sTool) = 0 ;
       virtual bool GetCalcAngles( const Vector3d& vtDirT, const Vector3d& vtDirA,
                                   int& nStat, double& dAngA1, double& dAngB1, double& dAngA2, double& dAngB2) = 0 ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 28f7a90..60b3bf2 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -690,6 +690,7 @@ EXE_EXPORT int  ExeGetHeadId( const std::string& sHead) ;
 // Machine Calc
 EXE_EXPORT bool ExeSetCalcTable( const std::string& sTable) ;
 EXE_EXPORT bool ExeSetCalcTool( const std::string& sTool, const std::string& sHead, int nExit) ;
+EXE_EXPORT bool ExeSetRotAxisBlock( const std::string& sAxis, double dVal) ;
 EXE_EXPORT bool ExeGetCalcTool( std::string& sTool) ;
 EXE_EXPORT bool ExeGetCalcAngles( const Vector3d& vtDirT, const Vector3d& vtDirA,
                                   int& nStat, double& dAngA1, double& dAngB1, double& dAngA2, double& dAngB2) ;