Interactive Brokers paper trading setup

Hi,
I'd like to configure a broker connection for my IB paper trading account but cannot get it to work. I can succesfully configure my IB live account but the paper account isn't recognized - even though the setup is very similar. I am using IB Gateway on my local machine, ports 4001 for live and 4002 for paper.

Please can you provide guidance how to set this up? The manual contains no specific info about IB paper trading setup.