Color by attributes - postgis connection

[Steven De Vriendt]

I have some trouble colouring by an attribute value i/c with a postgis
connection.
I want to colour the column cabuty by 3 unique values.
For now I'm trying to make a layer like this:

LAYER
   NAME "b_cabu_postgis"
   CONNECTIONTYPE postgis
   CONNECTION "host=localhost port=5432 dbname=globaalter
user=postgres_db password=autodesk6.5"
   DATA "the_geom from b_cabu"
   STATUS ON
   TYPE POLYGON
   DUMP TRUE
   TEMPLATE "ttt"
    CLASSITEM "cabuty"
    CLASS
	  EXPRESSION "CL"
        STYLE OUTLINECOLOR 0 0 255
        END
     	  EXPRESSION "OO"
        STYLE OUTLINECOLOR 255 0 255
        END
     END
    METADATA
    "wms_title" "gebouwen"
    "gml_include_items" "all"
     END
     PROJECTION
     "init=epsg:31300"
     END
END

Only the expression 'OO' is coloured, the objects corresponding with
'CL' in the cabuty are not showing up...what am I doing wrong ?

Thanks for helping out !

Steven