Can't get Render Layers to work

[gamedesign]

Hi All

I am having trouble getting Render Layers to work.
I have added the InfoChannel Kernel and set it to Render Layer ID.
I have also changed the Layer ID of the object I want to get the alpha from.
But all I get is a red background.

Can someone give me some pointers please?

[juanjgon]

The "render layer ID" channel renders a random color for each layer, as you can see in the attached image. If you need a mask for each layer, you must render the layers (enabling the layers rendering in the render target root node options panel) and use the "render layer mask" channel.

Thanks,
-Juanjo