[OpenLayers-Users] overwrhite the layers of the control "OpenLayers.Control.WMSGetFeatureInfo"

[islanis at infomed.sld.cu]

i got this , i want to overwrhite the layers of the control  
"OpenLayers.Control.WMSGetFeatureInfo" cause in this way it always use  
the layers of the map, and i want to use the layer that i want , no  
all of them.
//------------------------------------------------------------------------
wmsFeatureInfo = new OpenLayers.Control.WMSGetFeatureInfo({
      autoActivate : true,
      infoFormat : "application/vnd.ogc.gml",
      maxFeatures : 1,
	 QUERY_LAYERS:[potencial],
	 LAYERS: [potencial],
      eventListeners : {
           "getfeatureinfo" :  
function(e){popupPotencialGenerico(e,"sigfre_potencial_hidrico_Rios","Pot  
hidrico de río");}
      }
});

map.addControl(wmsFeatureInfo);
wmsFeatureInfo.QUERY_LAYERS=[potencial];
wmsFeatureInfo.LAYERS=[potencial];

map.zoomToMaxExtent();

//------------------------------------------------------------------------
thanks to all

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