query and point layer

[Laura Poggio]

I am learning how to use mapserver and I am fighting with a problem. I
managed to built a simple map application and I started to work with
queries. Everything was fine with all polygons layers I tried. However when
I started to use point layer (some soil sampling sites) the things went
wrong. I select the sites layer (see below) and query or nquery mode. Then I
click on the map and nothing happened, as if mapserver was not recognising
the query keywords I introduced in the mapfile.
Below there is the code I am using for this layer. If someone knows what I
can do, I will be extremely happy as this kind of layers is the most
important for my application!
Thanks in advance

Laura
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    LAYER     # point layer with sampled site starts here, query
        NAME "q_sites"
        DATA "D:/ALRPC/Gis/Data/Grugliasco/Soil_Data/Layers/gru_sites_gb"
        TRANSPARENCY 100
        TYPE point
        STATUS On
        HEADER 'c:/ms4w/tmp/mapfile/q_templates/prova_sites_header.html'
        FOOTER 'c:/ms4w/tmp/mapfile/q_templates/prova_sites_footer.html'
        TOLERANCE 10
        TOLERANCEUNITS pixels
            CLASS
                TEMPLATE
'c:/ms4w/tmp/mapfile/q_templates/prova_sites_class_query.html'
                STYLE
                    SYMBOL 'circle'
                    COLOR 255 0 0
                    SIZE 2
                END # end style
            END # end class
    END     # sites layer ends here
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