After reading the qr, nothing happens, what is the reason?
Use a Label to display the result in the AfterScan event
Taifun
You are doing something unusual in that FireBase GetValue call.
You are passing its Value If Not Found socket a do-result block asking it to set a global variable to 'Yok' .
May I assume you think that assignment is only going to happen if the value is not found?
I suspect that assignment is going to happen regardless, at evaluation of the inputs to the Firebase GetValue block.
The traditional way to do this is to just specify 'Yok' as the input to the ValueIfTagNotFound socket, and do testing of value in the FireBase .GotValue event block.
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