Formatting Durations in SSAS: Caveat

I recently published an article on MSSQLTips.com titled Format Durations in SQL Server Analysis Services. For those who haven't read it I'll summarize it quickly: it explains how to create an MDX formula that formats durations into an [hh]:mm:ss format, where [hh] can go over 24 hours. For more detailed information, please check out the article itself.