Adding tables to boolen class in Substitution Rules

Hi,

Is it possible to add tables to boolen class in Substitution Rules?

I want to have cost center field in profit center accounting substitution rules.

For example, if sales district is certain value, then set constant cost center.

Currently I have only profit center to be set, but I want to add cost center.

Cost center is not availbable in the structure PCASUB, so I thought about adding table/structure in boolen, but I don't know how.

I really appreciate your help!

Regards,

S.M.