feature attributes in featureselected about animatedcluster HOT 2 CLOSED

Once clustered each cluster is a feature wich contains the set of features near to that point.
"Original" features are stored withint the feature.cluster attribute. Take a look on that.

from animatedcluster.

ok thanks
i can access my value like this
couche_markers.events.on({
"featureselected": function(e) {
var feature = e.feature.cluster[0].data;
var cpt_cluster = e.feature.cluster.length;
if(cpt_cluster == 1)id_poi = e.feature.cluster[0].data.id_test;
}
});

now i want to have a specific external graphic when there is only one poi
so i have created this rule but i don't know how to get one of the feature.cluster value here

externalGraphic: "/drawable-hdpi/theme/${cat_poi}_poi.png",
instead of
externalGraphic: "/drawable-hdpi/theme/Cat_20_02_poi.png",

thanks :)

        // Define three rules to style the cluster features.
        var oneRule = new OpenLayers.Rule({
            filter: new OpenLayers.Filter.Comparison({
                type: OpenLayers.Filter.Comparison.LESS_THAN,
                 property: "count",
                value: 2
            }),
            symbolizer: {
                 fillOpacity: 1, 
               opacity : 1,
                externalGraphic: "/drawable-hdpi/theme/Cat_20_02_poi.png",
                graphicHeight: 50, graphicWidth: 50, graphicXOffset:-25, graphicYOffset:-25
            }
        });

from animatedcluster.