I have a combobox that where I need to show some of the items disabled. If there is only one column, it works fine. If I have multiple columns, it doesn't disable the item.

Here's some sample code - drop a combo on a form and add this to the Init() of the combo:

FOR lnIndex = 1 TO 10
    lcItem = SYS(2015)
    IF MOD(lnIndex, 2) = 0
       lcItem = "\" + lcItem
    ENDIF
    
    This.AddListItem(lcItem)
    * Uncomment this line to see the issue.
    *This.AddListItem(TRANSFORM(lnIndex), This.NewIndex, 2)
ENDFOR

What am I missing?