calling method in another method of a report (Dynamics AX)

I've two methods in my report design . My question is How can I call a method from another method of my report design.

Explanation: Method 1: CustUnit

Method 2: CustPrice

In my CustPrice method I want to call CustUnit method because I'm calculating Custprice value based on my CustUnit. If my CustUnit is M2 I will calculate my CustPrice=Net Amount/M2 (If my Custunit is M2, if CustUnit is Pieces then Custprice=Net Amount/Pieces)

Please I need help