You cannot have the write node set to “Value”; what that does is insert a constant value from that field in the node config — which is currently an empty string, and that explains why you’re seeing nothing written.
Try using a change node before the PAC write node to move the string into a subproperty of payload, something like msg.payload.data:
Then, in the PAC write node, change the “Value” field to take that msg.payload.data:
I can expand more on this, but can you just check if that gets you over the initial hurdle of getting something into the table?
Last note is to reiterate @Beno comment on having complete msg object debugs at every stage so you can see what data is going IN to each node as well as what comes out. This really helps both you and us understand what’s happening to the data throughout the flow:
EDIT:
Just re-read your comment about JSON appearing cryptic, have you seen this video? Might be worth a watch to help demystify what’s going on with the JSON structure
