Virtual characteristic or a regular charactersitic ?

Hello All,

i want to include a new characteristic 'zregion' in my cube, whose value gets computed on the basis of other characteristic values in the cube.

I'm confused whether i should populate this characteristic in the update rules or whether i should implement it as a virtual characteristic.

I think if i,

implement 'zregion' as a virtual characteristic then i will not be able to filter the query results based on the user specified values for the virtual characteristic(by creating a variable on the virtual characteristic for manual user entry).

Whereas if i have the values for 'zregion' in the cube itself, then it will allow me to filter the query results based of the user specified value for 'zregion' at query execution time.

Please let me know your thoughts on this, is my understanding right ?

Regards,

Sanjay