Will,
Try:

IIF(Thisform.decPlaces=0, lcIm, Stuff(lcIm, Len(lcIm)-Thisform.decPlaces, 1, '.'))

HTH
>Hi All,
>
>I'm looking for a neat way to do the following case statement.. it's to set a input mask depending on decimal places
>
>

>Do Case
>Case Thisform.decPlaces = 0
>	lcIm = '99999999'
>Case Thisform.decPlaces = 1
>	lcIm = '999999.9'
>Case Thisform.decPlaces = 2
>	lcIm = '99999.99'
>Otherwise
>	lcIm = '99999999'
>EndCase
>

>
>The closest I have got is this
>

>lcIm = '99999999'
>lcIm = Stuff(lcIm, Len(lcIm)-Thisform.decPlaces, 1, '.')
>

>But this falls down on 0 dp
>
>Anyone got any ideas?
>
>TIA