Immediate If function (IIf). How it is interpreted?

Hi

I've encountered a problem within the following block of code:

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When this statement is executed, overflow error is being thrown. For me it looks like part 'Counter / Denominator' is 'precompiled' before condition is examined, so that error is raised first.

This functionality seems to be a little bit illogical, as I want to check the condition first, and then take defined action, rather then checking all before examininng condition specified at the beginning of IIf function.

Could someone explain to me, how interpreter processes this statement?

Norie,

thanks for explanation.