Parameter location doesn't match proc api parameter location

[girng]

I've been looking over the chat example here: 
[https://nim-lang.org/docs/asyncnet.html](https://nim-lang.org/docs/asyncnet.html)

I was trying to make a const port number, like so:
    
    
    const
      PORT = 9000
    server.bindAddr(Port(PORT))
    
    
    Run

However, I receive an error: 
    
    
    Error: attempting to call routine: 'Port'
      found 'PORT' of kind 'const'
    
    
    Run

So looked at bindAddr's parameters: > proc bindAddr(socket: AsyncSocket; port = 
Port(0); address = "") {...}

Some questions:

>   * How come **server.bindAddr(Port(PORT))** works, when the first parameter 
> of bindAddr uses a socket, not a port?
>   * How come my const PORT isn't working?
>