Change multi-select value after a given Date

Hi, I’ve spent hours on this and I’m not sure what I’m doing wrong. Here’s what I’d like to accomplish:

• Each row in the table is a person (a child in daycare)
• I want to automate a way to change the location of their daycare on a certain date
• I have these columns:
  • Current Location (multi-select)
  • Change Date (date)
  • New Location (multi-select containing the same values as Current Location)
• I’m trying to set up the automation so that on Change Date it will update Current Location to match the value in New Location, but it isn’t working and I haven’t been able to figure out why. I get a “received invalid inputs” message.

Any help is much appreciated!