I ended up having to add something else to it. This is how it worked for me.

=DateAdd (DateInterval.Month, Fields!CONTRACT_TERM.Value, Fields!FIRST_PAY_DATE.Value)

That expression adds the number of months contained in CONTRACT_TERM to...

Using the MSDN article, that doesnt seem to be working. Check out my expression:

=DateAdd (Month, Fields!CONTRACT_TERM.Value, Fields!FIRST_PAY_DATE.Value)

Do you see anything I could be doing wrong?