How to get server port

I want to know how to get dedicated server port.
I created server, port 64000~64099. I want to get this number from server.
I cant use c++ because compiling error,so I want to get from only blueprint.

I tried to get port number from "open level"s option (when using open level, I inputed “192.???.?.?” in level name and, port number in options) but I cant get it from other server gamemode BP.

could you teach me some method to get port.

like this