Dimension Formula with strtomember

Hi BPC Experts,

I'm on BPC for Microsoft , Version 10, Service Pack 13.

I'm in a migration project from Everest to BPC 10

I have a ICMatching account that is calculated using this formula

'IIF([ENTITY].[H1].PROPERTIES("ISINTCO")="Y" AND [INTCO].PROPERTIES("ISENTITY")="Y",[EPLOP_P]+([EPLOP_A],STRTOMEMBER("[ENTITY].[H1].[" + [INTCO].PROPERTIES("ENTITY") + "]"),STRTOMEMBER("[INTCO].[" + [ENTITY].[H1].PROPERTIES("INTCO") + "]")),0)

EPLOP_P and EPLOP_A are base members.

Dimension Process is OK,  but this account in BPC 10 is Always 0, but  in Everest, with same source data, results are different .

Any help appreciated

Thanks,

Samuele