Problems with MQTT flow after Excel import and msg modifications

[E1cid]

I suspect it is one of the JSONata expressions, as explained in your OG thread you may need to force an array

@How to create payloads (strings merged/concatenated from array objects) from Excel data?

Unless only one is returned. To force that to an array, [$keys()] would `force a single result to a single array, it would not affect a array with multiple values.

Please supply the data going into change key and ip functions so i can test.