Regrettably, the nested macros are resolved too late for the condition. That is why the nested macros work for the branches of condition - (truevalue) and (falsevalue) parameters but not for the condition expression. If you want to compare two macros, please use custom macros. You can find a sample code here: Macro expressions

More information about nested macros can be found here: New in 5.5 - Macro parameters

Version 6 supports smarter system of macros: K#: K# syntax

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