>DynamicInputMask is used for variable masks within a grid column, that is, the InputMask should change, depending on some condition. You require this, because you have only a single TextBox to control, but the user sees multiple objects (one for each visible row).

If I require it it didn't work. Any suggestions.

>Do you still have a setting for DynamicInputMask? Perhaps it is overriding (superceding, replacing) the InputMask property.

No I don't use it anymore. But being blank does it override InputMask?