Hello Gagliem,
I have the same problem and a posting for the "Isband" tag. Fixing this will probably solve my problem also. Thanks for explaining it better. Take care ...

Melvin

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It seems that the flag 'isband' works only in the Artist Page and not in the Album Page, so if I use <dax:if(isband)> in the Album Page, it returns always false, but it could be useful also in this page.