Report - Display COSTCENTER member filtered by ENTITY

Hi ALL,

Here is my report, as you can see in my Row axe I have COSTELEMENT et in the Column Axe the TIME, all other dimension are not in the report so dimension are link to the context I guess ? (Someone can confirm ?)

Now if we make a zoom on the top of the report, we can see 3 dimensions (Entity, CostCenter and Time), they are all EPMContextMember (see below each formula)

:

Entity : =EPMContextMember(;"ENTITY";)

Cost Center : =EPMContextMember(;"COSTCENTER";"ENTITY=E6")

Time : =EPMContextMember(;"TIME";"LEVEL=YEAR";)

Complementary information : I have 5000 members in the COSTCENTER dimension and there is a property named ENTITY (which call an entity).

Now, I select an Entity (here S0300), then when I select the Cost center I only want to see the affiliated costcenter to the entity [whence formula Cost Center : =EPMContextMember(;"COSTCENTER";"ENTITY=E6")].

But see below, after a long loading time the COSTCENTER Member selector is Empty.  What's wrong in my formula ? 

I think that part of the problem came from the Costcenter. Is there an other way to do this ?

Thanks a lot !!!

Karine