Hello Geoserver-users,
Sorry for this trival question but I am quite new to this.
In GeoServer manual at
http://docs.geoserver.org/stable/en/user/services/wms/vendor.html#propertyname
says:
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"propertyName"
The propertyName parameter specifies which properties are included in the response of the GetFeatureInfo operation.
The syntax is the same as in the WFS GetFeature operation.
For a request for a single layer the syntax is:
propertyName=name1,...,nameN
For multiple layers the syntax is:
propertyName=(nameLayer11,...,nameLayer1N)...(name1LayerN,...,nameNLayerN)
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But I could get proper syntax for multiple layers 
I tried to GetFeatureInfo for one layer and I succeded:
vendorParams: {propertyName:['STREET', 'MATERIAL', 'DIAMETER']},
Now I want to add another layer
{watermeters:('CUSTOMER', 'NUMBER')
Tried everything but with no success.
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my OpenLayers code:
info = new OpenLayers.Control.WMSGetFeatureInfo(
{
url:
"http://localhost:8080/geoserver/mygis/wms",
layers: [waterpipes],
vendorParams: {propertyName:['STREET', 'MATERIAL', 'DIAMETER']},
queryVisible: true,
INFO_FORMAT: 'text/html',
eventListeners:
{getfeatureinfo: function(event)
{document.getElementById('info').innerHTML = event.text;}
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Thanks.
--
Best regards,
Nesh mailto:mr_bungle@anonymised.com