For inner dimension (BRAND_VARIANT) you have to create property BRAND and fill it with BRAND1, BAND2...
Then for outer dimension BRAND link it to the BRAND property of inner dimension.
Then select members of inner dimension...
For inner dimension (BRAND_VARIANT) you have to create property BRAND and fill it with BRAND1, BAND2...
Then for outer dimension BRAND link it to the BRAND property of inner dimension.
Then select members of inner dimension...