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thanks Barry!
I fixed the missing bracket error (but it's not really that error)
Foreach was suspicious to me too and I rewrote the structure to "for". But the problem remained. I'm trying to make...

thanks Barry!

Key's value also seems to be OK
....
but I have other strange bugs. It may have the same cause as this type error. Maybe I mess something up in the memory, I just don’t understand...

what type of "key" is in this structure?

foreach myarray as key => value

in my case line 2 causes an "Error data type mismatch" error:

foreach myarray as key => value
c = lower(key)
...