Hierarchy variables losing reference in BO Reports

Hi All,

I have build a webi report based on BexQuery.In the BexQuery we have a mandatory hierarchy variable.

For example Organization hierarchy and it should refer to current sales structure.

But when i created universe this variable is not coming under current sales structure class it is losing reference and when i run the report its throwing error instead of showing Lovs.

I tried adding Current sales structure characteristic to Free characteristic,but no luck.

Can any when explain me why this is happening.

Thanks

Arun