STRTOVALUE worked for me. For some reason I had the formula following the cameCase convention with LOWER & UPPER caps which was giving me an error in the BPC editor.
([ACCOUNT].[PARENTH1].[MF_SALES_ANN])*(-12/(STRTOVALUE([TIME].CurrentMember.Properties("BASE_PERIOD")))
BASE_PERIOD is NUMC, for some reason without STRTOVALUE it gives me the error that I described before. I'm using BPC 10.1 SP07.
Thank you Vadim!
Regards,
Message was edited by: Kermit Bravo