As David mentioned you cannot leave the cell empty which means if you use
ISBlank() to check for blank that will not return TRUE . Instead you can try

=IF(A1="","do something","")

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Jacob Skaria


"Vlado Sveda" wrote:

I'm trying to find a way how to use IF condition:
=IF(MyCondition; ValueIfTrue; ... else leave cell empty ...).

=IF(MyCondition; ValueIfTrue; "") is not good for me, because it does not
leave the cell empty.

Thanks in advance for every suggestions.

Vlado