after update event only when it was null

  • Thread starter Thread starter zionsaal
  • Start date Start date
Z

zionsaal

I have a control in a form and I want a msgbox to pop up after users
modify the value in the control but I want the msgbox should not pop
up if the control was before a null or a 0 value
it should only pop up when he modify it

how can i do that?
 

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