I’m no expert on scripting, but this passage seems to relate to
specifically deleting that field. As you follow the script down the page
you get the script for each of the buttons, they sizes, colour and what
they do etc, first, last, add new, update and delete, each button
follows systematically down the script, then after that is the bit I
pasted, which is the only field referred to in that way, the
“Decam_Done” field, but maybe I’m wrong, but clearly this field is
causing some issue.