>>>Try:
>>
>>>thisform.Grid1.Column.DynamicInputMask = "IIF(TheField%1=0,'9999','9999.999')"
>>>Not tested.
>>
>>TESTED
>>
>>Not what I wanted to do but I found the way.
>>
>>Your solution makes a record not int is shown with decimals, integer without decimals. Perfect.
>>
>>What I wanted to do was: Just one with decimals? Everyone with decimals.
>
>Then add a property to the form, something like this
>
>

locate for TheField%1#0
>thisform.addproperty("hasNoDecimals", not found())
>thisform.oGrid.DynamicInputMask = "IIF(thisform.hasNoDecimals,'9999','9999.999')"
>

Thank you, Dragan.