Originally Posted by
June7
Is record allowed to have a value in only one of these two fields? Why two fields and not just one?
Is the subform in Continuous or Datasheet view? Code to set textbox Visible or Enabled property will affect all instances of the textbox. Check into textbox Conditional Formatting. It allows conditional disabling of control, however, the control will still be visible.
I think in report would be better to use expression in textbox ControlSource:
=IIf([FIELD_CHECK]=True,[FIELD_ABC],[FIELD_123])