[rules-users] Unable to perform simple primitive operations

Hi All, I am using Drools 3.0.6 and unable to perform some simple form of multiplication. I want to compare an object field with another field multiplied by a factor. * rule* "*Calculate* Business profit,1" *when **EMIAgainstProperty* ( bp1 : businessProfit1 ) emi : *EMIAgainstProperty* ( businessProfit2 > *(bp1*1.5)* ) *then *emi.setBusinessProfit((emi.getBusinessProfit1 ()+emi.getBusinessProfit2())/2);* **end* I get an error on creation of the package that * is undefined for Double and double. I understand this is because Drools does an auto box on primitive type variables. But is there a work around to do simpler comparisons like this, especially on the right hand side of the condition. some thing like [ variable * constantValue ]. Also, i am forced to do a declaration for businessProfit1, and use in the comparison below. I am not able to compare two fields of the same object directly. some thing like businessProfit2 > businessProfit1 does not work, why is this so? Any one has faced these problems earlier? Thanks Natraj