Why Does MQL5 Behave Unexpectedly - page 2

 
Paul Anscombe #:
That is not correct it is a symptom of you not ensuring that the data for your non-chart symbol is updated before trying to access it
There are multiple threads on how to deal with the problem so do a search

but wich keyword i must use for find??  can you send me some link ? thanks

 
faustf #:
How many follow-ups, I finally found the Arcano. Basically, if you are on one chart and want to open another cross, if you haven't opened any trades on that cross before, it won't let you open it. If you open a trade manually once and then use an expert advisor, it works. However, I don't understand if this limitation is intrinsic to MetaTrader 5 or if my script is causing it unintentionally. I tend to lean towards the first option, especially since in MetaTrader 4 it has always allowed trades to be opened even if the cross had never been worked on before. Do you happen to have any insights? Thanks.

I REPEAT: 

I recommend that you use the search field at top of this page. There are many articles and forum threads discussing multi symbol trading.