How to settle costs to WBS and statistical cost center

Hi,

We want to setlle costs from an internal order to a WBS element. No problem so far. Additionaly we want to post STATISTICALLY the settlement to a cost center. According to SAP help fine. But how is that done practically? When I enter a second line in the settlement rule with 100% SAP issues a message saying 200% is to be settled.

Further it's possible to have settlement rules automatically generated. Does that work for WBS and a statistical settlement to cost center at the same time?

Thank you

Exberliner