Different Authorization for one User in BW 7.0

Hi Gurus,

Here is our situation:

The same User has to be able to see different values of one InfoObject in different Queries.

For Example: In Query1 the User has to see only one Cost Center and in Query2 - many Cost Centers.

How can this be done with the new BW 7.0 Authorization Concept?

We have tried the user to be included in two different roles , which contain the Auth. Analysis Objects, but it's not working.

We have also tried with Authorization Variables - also not helping.

Thanks in advance.

S.