Do you really expect an answer? There are no mind readers here and our crystal balls are cracked. Always post all relevant code (using Code button) or attach the source file.
Don't post pictures of code, they are generally too hard to read.
Please edit your (original) post and use the CODE button (or Alt+S)! (For large amounts of code, attach it.)
General rules and best pratices of the Forum. - General - MQL5 programming forum (2019)
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Why did you post your MT5 question in the MQL4 section, (bottom of the Root page)?
General rules and best pratices of the Forum. - General - MQL5 programming forum? (2017)
Next time, post in the correct place. The moderators will likely move this thread there soon.

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I have tried converting mq4 to mq5, but there is a problem with the buffer where the buffer does not match the one in mq4, what's wrong with the source code? please