Passing data to a thread

[XFFA.IR Bot]

I have a custom table with multiple rows. I want to add a ‘submit details’ button which will link to the thread creation page for a specific node. This is easy, I can do this - but I want to ‘link‘ the created thread with the record of the button that is pressed.

I guess the simple thing to do is to save the record ID in the thread as a column, but i'm not sure how to pass that data over when saving the thread.