Hi
as I wrote in my first answer:
Quote- use the status var (with POST_ERR) to debug your code and get more
information about your error(s)
e.g.
SET_VAR(.....,status)
IF status <> 0 THEN POST_ERR(status, '', 0, 2) ENDIF
And, are you sure you have to set these vars via karel?
I think it might be dangerous to edit the COORD-Frames directly, unless you really know what you're doing...
best regards