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OrderSelect and HistoryOrderSelect both return false in OnTradeTransactions

Has anyone ever encountered OrderSelect and HistoryOrderSelect both return false in OnTradeTransactions when trans.type = TRADE_TRANSACTION_DEAL_ADD? How do you deal with that? I need to grab open price of the deal so I need to refer to the order ticket

6

Failed to create empty document

I installed around 20 terminals on my PC, but able to only open around 15-19 terminals. When I open a new chart, the terminal keep showing "Failed to create empty document". Has anyone encountered this problem before? How did you overcome it? How many MT5 terminals can we run on a PC? Thank you

7

Global Variables Lost on Window 10 PC Update?

I set up a live testing of my strategies with the use of MT5 Global Variables few days ago. There was an update of Window 10 on the weekend and the terminals were forcibly closed. I opened the terminals again today and found that all the Global Variables disappeared. Aren't Global Variables designed