Rounding a database field up

I need to round a database field up from 4 decimal to 2 decimal places. My formula now looks like this:

Roundup({InvDet.ListPriceShow},2)

When I go to save this, it gives me an error of "a number, or currency amount is required here."

I am not new to coding but new to Crystal Reports and am not sure where to go from here.