>Hi Naomi
>
>My code for the setbackgroundcolor
>
>

>LPARAMETERS mtwup1,cmat_type,mzedit
>
>cmat_type=ALLTRIM(cmat_type)
>
>DO CASE 
> CASE EMPTY(mtwup1) and !medit
>  mcolour=rgb(224,224,218)
> CASE !EMPTY(mtwup1) and cmat_type="Dry"
>  mcolour=RGB(0,255,0)
> CASE !EMPTY(mtwup1) and cmat_type="Blend"
>  mcolour=RGB(255,255,255)
> CASE !EMPTY(mtwup1) and cmat_type="UV"
>  mcolour=RGB(255,100,0)
> OTHERWISE
>  mcolour=rgb(80,80,80)
>ENDCASE
>
>RETURN mcolour
>
>  * 1) Grey for empty field
>  * 2) Green for full not blend
>  * 3) Brown for full Blend
>  * 4) Blue for UV
>
>

>
>Getting the error "Data type is invalid for this property" when I call from the grids Init Method:
>
>thisform.rxpageframe1.page1.grdWip.COLUMN8.dynamicbackcolor=thisform.setbackgroundcolor(wipdata.wup1,wipdata.mat_type,medit)

DynamicBackColor property is a string. With how you have it, it evaluates the setbackgroundcolor immediately and tries to set the dynamicbackcolor to the result, which is an integer. Change

thisform.rxpageframe1.page1.grdWip.COLUMN8.dynamicbackcolor=thisform.setbackgroundcolor(wipdata.wup1,wipdata.mat_type,medit)

to

thisform.rxpageframe1.page1.grdWip.COLUMN8.dynamicbackcolor="thisform.setbackgroundcolor(wipdata.wup1,wipdata.mat_type,medit)"