How to change values based on input

[trojnfn]

I have a form with a quantity field labeled single qty, and a unit of measure field that predisplays EACH when the form is opened.

We have just added another input quantity field labeled lot qty. When they enter a value in the lot qty field, the unit of measure should change from EACH to LOT.

I need to have this done before the form is submitted.

Can somebody please provide some example and/or code to do this ?

Thanks

[BigDaddyLH]

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