How to enable the "Start On History Data" in Debug menu of MetaEditor

 

The related history data has been downloaded in MetaTrader4. And the "Use specified settings" in Options - Debug has been checked. While the "Start On History Data" in Debug menu of MetaEditor is always grey as disabled although I have tried with several different symbol and time frames. Thanks for your suggestions in advance!

 

 

 

 

 
This is feature available in the MT5 only.
Reason: