Well, script is running without errors. But dont get plots on mt4 chart.
Can someone tell me how to return a brokercommand value (check if !=0)?
on the mt4 terminal there are no related messages in Experts or Journal tab.

Zorro manual "MT4/5 Bridge" gives advise on how to get a return, i have read it ... but not really understood. And seems to me like explaination for "own generated broker commands".
Not my case, already predefined. so how to proceed?