diff --git a/EMkMachMgr.h b/EMkMachMgr.h
index 1f91176..6a9c675 100644
--- a/EMkMachMgr.h
+++ b/EMkMachMgr.h
@@ -269,7 +269,7 @@ class __declspec( novtable) IMachMgr
       virtual bool GetAxisToken( const std::string& sAxis, std::string& sToken) const = 0 ;
       virtual bool GetAxisType( const std::string& sAxis, bool& bLinear) const = 0 ;
       virtual bool GetAxisInvert( const std::string& sAxis, bool& bInvert) const = 0 ;
-      virtual bool SetAxisPos( const std::string& sAxis, double dVal) = 0 ;
+      virtual bool SetAxisPos( const std::string& sAxis, double dVal, double* pdNewVal = nullptr) = 0 ;
       virtual bool GetAxisPos( const std::string& sAxis, double& dVal) const = 0 ;
       virtual bool GetAxisHomePos( const std::string& sAxis, double& dHomeVal) const = 0 ;
       virtual bool ResetAxisPos( const std::string& sAxis) = 0 ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index e92bd97..6e85145 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -891,7 +891,7 @@ EXE_EXPORT bool ExeGetCalcAuxDirFromAngles( const DBLVECTOR& vAng, Vector3d& vtD
 EXE_EXPORT bool ExeVerifyOutstroke( double dX, double dY, double dZ, double dAngA, double dAngB, int& nStat) ;
 EXE_EXPORT bool ExeGetOutstrokeInfo( std::string& sInfo) ;
 // Machine Move
-EXE_EXPORT bool ExeSetAxisPos( const std::string& sAxis, double dVal) ;
+EXE_EXPORT bool ExeSetAxisPos( const std::string& sAxis, double dVal, double* pdNewVal = nullptr) ;
 EXE_EXPORT bool ExeGetAxisPos( const std::string& sAxis, double* pdVal) ;
 EXE_EXPORT bool ExeGetAxisHomePos( const std::string& sAxis, double* pdHomeVal) ;
 EXE_EXPORT bool ExeResetAxisPos( const std::string& sAxis) ;