title: How to specify the parameter layers in a WMS request?
body: <p>I want to access my published and also public Google Maps Engine map via WMS.</p>
  
  <p>I already have copied the link out of the map details. But I don't know how the parameter layers has to look like? What is its value?</p>
  
  <p>As value I tried the name of the layer but it doesn't seem to work.
  The response I get is "No data for requested layers" 
  There is no white space in the name of my layer. </p>