changing openlayers clutter radius

I used openlayers clustter strategy to cluster a dataset from a geoserver.

I used the following code in styling of clusters.

var myStyle = new开发者_JAVA百科 OpenLayers.Style( {
                    pointRadius :20,
                    fillColor :'#FFFF00',
                    fillOpacity :0.5,
                    strokeColor :'#FFFFFF',
                    strokeWidth :2,
                    strokeOpacity :0.5
                });
var myStyleMap = new OpenLayers.StyleMap( {
    "default" :myStyle
});

This works nicely if I write the code in html pages and also in jsp pages.

when I want to change the cluster radius dynamically according to the data point count in each cluster I just had to do the following change to the above code.

var myStyle = new OpenLayers.Style( {
                    pointRadius :"${radius}",
                    fillColor :'#FFFF00',
                    fillOpacity :0.5,
                    strokeColor :'#FFFFFF',
                    strokeWidth :2,
                    strokeOpacity :0.5
                }, {
                    context : {
                        radius: function(feature) {
                            return Math.min(feature.attributes.count, 7) +3;;

                        }
                    }
                });
var myStyleMap = new OpenLayers.StyleMap( {
    "default" :myStyle
});

This also woks fine, if I write the code in an html page.

But, when I wanna use the above second code in jsp pages, it gives me the mozilla firebug error => Unexpected value parsing r attributes.

can someone help me?

thanks in advance!

From JSP2 spec you should be able to escape the EL With something like : ${'${'}radius} in your JSP page

Good luck.