Hey Steve,
The issue you’re facing is because you’re trying to link a data field inside a field that is expecting a list. You need to add the data from the “add” option, which is highlighted in the screenshot.
Here are two videos that should help:
• Sending a list: List Video
• Sending normal values: Normal Values Video
If this still doesn’t resolve your issue, feel free to send us the table URL, and we’ll look into it further! 😊