Copy/merge question

[macaumetal]

Hi, i have a script to make the writer value show on the composer field ($copymerge(composer,writer))
The thing is that when there are composers already in the file, it repeats the names:




But it’s not actually repeating them, it’s generating ONE value from the composer field, and adding the ones on the writer tag:





I tried using $unset(composer) (which I though would clear the field) and then run the copymerge to overwrite it, but it didn’t work.

Is there a way to tell picard to overwrite “composer” ONLY if “writer” exists?
Or to clear “composer” and then copy “writer” ONLY if “writer” exists?

Thanks!!

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