Hi Terry,

>It would be interesting to see what affect binding the textbox to a >transformed field.

>Set the text box to default (none) format and inputmask. What happens when:

THISFORM.txtMyTestTextBox.Value=TRANSFORM(THISFORM.oRS.Fields('d_datec').value)

>Does the error still occur?

No, but when i assing the value it come back again.

THISFORM.oRS.Fields('d_Datec').value=THIS.VALUE

Any other sugestions?

Thank's

João