[OpenLayers-Users] Display a Attribute of a GML-File on label in OpenLayers

[Gau, Hans-Jürgen]

hello,
 
sorry, I'm beginner...

I want to display attribute called 'name' of a GML file on the map as a label in the center of the polygon. I tried the following example with only one feature. The polygon is correctly displayed but instead of "name of polygon" "${name}" is displayed.

...
		var gmllayer = new OpenLayers.Layer.Vector("GML", {
                protocol: new OpenLayers.Protocol.HTTP({
                    url: "./gml/test.gml", 
                    format: new OpenLayers.Format.GML({extractAttributes: true})   
					}),
				style: {strokeColor:"#2C5C91", fillColor:"#2C5C91",strokeWidth:1,fillOpacity: 0.1,
						label:"${name}",labelOutlineColor:"white",labelOutlineWidth:1 },
                strategies: [new OpenLayers.Strategy.Fixed()]
            });
        map.addLayer(gmllayer);
...

GML-File test.gml, you see tested with Atribute and element 'name'

###Begin of GML-file

<?xml version="1.0" encoding="ISO-8859-1"?>
<wfs:FeatureCollection  xmlns:wfs="http://www.opengis.net/wfs" 
xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <gml:featureMember  name="name of polygon">
      <polygon fid="1" name="name of polygon">
        <msGeometry  name="name of polygon">
        <gml:Polygon srsName="EPSG:25832">
          <gml:outerBoundaryIs  name="name of polygon">
            <gml:LinearRing>
              <gml:coordinates name="hoaoaoa!" >657211.496206959,5852409.25758288 702139.320850297,5854075.33901891 700277.499102075,5898550.55493897 655763.294395135,5896890.64992756 657211.496206959,5852409.25758288 </gml:coordinates>
            </gml:LinearRing>
          </gml:outerBoundaryIs>
        </gml:Polygon>
        </msGeometry>
        <ogc_fid>1</ogc_fid>
        <name>name of polygon</name>
        <id>1</id>
      </polygon>
    </gml:featureMember>
</wfs:FeatureCollection>

###END of GML-file


I've searched a lot on openlayers-website but nothing has helped me finally.

Best regards, hans