Derive 0FISCPER from in Integrated Planning

Hello World!

I 'm trying to use the characteristics relationship in Integrated Planning for derive 0FISCPER from 0FISCPER3, 0FISCYEAR and 0FISCVARNT with a Exit Class: CL_RSPLS_CR_EXIT_BPS or CL_RSPLS_CR_EXIT_BASE. But both don't work correctly, specially when I make a copy in a MultiProvider. Can somebody say to me like making to use the characteristic relations to derive 0FISCPER or how to solve this derive problem?

thanks,

Xavier