"Match Color" will not allow me to select a source layer

[#1]

Hey everybody,

I have multiple layers. I select the layer I would like to change with "Match Color." When the dialox box appears it only allows for one of my layers to be the source image. Help!

[#2]

Hey everybody,

I have multiple layers. I select the layer I would like to change with "Match Color." When the dialox box appears it only allows for one of my layers to be the source image. Help!

[#3]

The Source is one of the documents open in photoshop. The field (Layer) below is where you select the layer within that document.