I am trying to make a button that when clicked, will make a UD column part.UsableLength_c equal to part.PartLength. Should I use row-copy or dataview-copy to do this? I tried both, but neither one is working when I am clicking the button.
Since both of your fields are in the same data view, Part, you should be able to just use row-update and set the UsableLength_c field equal to the PartLength field. Something like this
This makes me think one of your other events that used replace is still trying to fire on the button click, maybe just add a whole new button so there aren’t any event wires getting crossed.