PS/SD Revenue planning

Hi gurus,

My client has one line item in contract(SD) with complete scope of work and we are planning to use milestone billing.

eg 10% after signing of contract

     20% after approval of design

     65% after Production and so on

PS structure is something like below

WBS 1    Order(L1)

          1.1 Engineering(L2)

          1.2 Production(L2)

          1.2.1 Steel(L3)

          1.2.2 Cladding(L3)

          1.3 Installation

          1.4 indirects

I can achieve revenue planning from CJ42 against each wbs element, how can i achieve actual revenue against these WBS

clients requirement is to see the revenue for each level of WSB , eg actual revenue of steel.

Is it possible to achieve such scenario.

Regards

Raj