Numeric value out of range in Project actual transactions report

Hi, I'm receiving an error while running The Project actual transactions base AX report with no filters. The error is:

Numeric value out of range

I'm trying to Fix it by looking at The ProjListTransDP class which populates The ProjListTransTmp table and I'm sure one of The real values is getting a really large number, but who do I solve this in AX? In SQL i guess this could be solved by using a Bigint field but what about AX? Any idea? Besides this is a base report. I would apareciste your help on this matter.

Thanks!