Request Canceled cannot be set. The field is always disabled.

   CHECKED      : When the field shows a check-mark, it indicates that
                  the last file-requester was ended by activation of the
                  Cancel button.
   UNCHECKED    : Without check-mark, the field indicates that the last
                  file-requester was ended by a valid file-selection.

   NOTE         : The check-mark only functions when the Abort on Cancel
                  setting is set to YES.

MATRIX