Hi @humanalpha,
That happens because non-data DB sources don’t have an unique id attribute assigned by bubble. This is the same reason why you won’t be able to use options sets data as well in the source data.
I’m not 100% sure, but maybe you can try adding an _id field in the response endpoint from your SQL table / api endpoint. Obviously its not very practical or seamless. However at this point the plugin is only able to use bubble provided functions (the Object.get function). If your source data has to be external SQL DB query I’m afraid this plugin won’t serve the purpose (kindly ask bubble support to unsubscribe you and give a refund referencing this message in such a scenario).
Best,
Gaurav