Q: multi-column-list-panel - updating column header

Hello All,

Does anybody know how to change the column headers of a
multi-column-list-panel? Undocumented call

    (setf (capi::list-panel-columns lp)
        '((:TITLE "one") (:TITLE "two" :ADJUST :RIGHT :GAP 15) (:TITLE
"three")))

seems to alter the column slot only but does not propagate changes to
the associated header-control.
I use LWW 4.2 Personal.
---
Sincerely,
Dmitri Ivanov
www.aha.ru/~divanov