Could you please help me to check what is wrong on this expression:
if ('Tag1') = 1 OR (‘Tag2') = 1 OR (‘'Tag3') = 1 then 1 else 0
is there any issue with the multiple condition?
There's nothing wrong with the syntax of this PE expression, and your multiple conditions are fine. I did note though that you have Tag3 wrapped in imbalanced single quotes - (‘'Tag3').
What is the specific error you are seeing with this expression? If you're not seeing an error message, are you seeing an unexpected result? In what context are you executing this expression (PI ProcessBook, PI AF Expression analysis, etc)?
The double single quote seems to be your issue.
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