[OpenLayers-Users] Switching Layers Assigned to a SelectFeature Control

[Bill Thoen]

I've got three vector feature layers and I'd like to use the same tool 
to select any feature from any of these layers. But I understand that 
you can only have one layer selectable at a time. So I'm thinking that 
if I change the layer reference in the control as needed, that will do 
it. But it doesn't seem to work. I've tried changing the layer reference 
in both map.controls[n].layer and panel.controls[n].layer but the tool 
continues to select from the original layer that was assigned when the 
tool was created. What am I doing wrong?