Calculations in Dialog CRM 2011

Hello All,

I have a requirement to create Dialog in CRM 2011, where we need to capture the credit details for a Customer.

I have 2 prompt & responses fields for Credit Value& Credit Months and I need to show the multiplied value of this 2 fields in Total Credit field on the Dialog.

Example: if Credit Value is £100.00 and Credit Months is 12 then I need to show £1200.00 as a Total Credit.

Is this possible in CRM 2011 Dialog?

Regards,

Rahul