Save Game variable not working

I should be able to plug my “Save Game Ref” variable into the target of my Save Game function. But, it will not connect.
Even if I create a new unique Save Game variable, it will not plug into the target.
What do I need to fix so my “Game Save Ref” will get plugged into my Save Game object?

Below I have a screen grab of my Save Game function.
And below that, I have a screen grab that shows the Save Game object with a grey’s out node.