Script logic for Multiplying Quanitity with Price

Hello,

Is there a way to calculate Amount by Multiplying Quantity with Price. As per my knowledge it can be done through Dimension properties, but is there any other way of doing it through script logic. Also, let me know which one is the best way of doing it.

*XDIM_MEMBERSET SP_Account = SP_Quantity

*XDIM_MEMBERSET SP_Account = SP_Price

*XDIM_MEMBERSET SP_Account = SP_Amount

For Example :

Qty is 50

Price is 26

For the Amount i want scrip logic?

Regards

Bhagyesh Ravange