Linear Color to Alpha

Hi,
I have the following problem here. I have a Texture Object that I pass through Texture Bombing, but I have to get Alpha Channel out of it to connect to Height Output.

How to do it?

Hi quickly tested it I used the mask node with only the alpha enabled and it’s not working Texture Booming only will return RGB but not A.
I hope that helps and you find a solution to bypass the alpha.