@hghhgghdf-dfdf Tanks for reply. I checked this out and from I saw it is not suited my requirements (or I missed something). But in that context I need to use backtrader.indicators (a.e. backtrader.indicators.LaguerreRSI) outside backtrader as usual indicators. Is it possible?

The subscription to data services is required for getting the live data from InteractiveBrokers. Please see the following post: https://community.backtrader.com/topic/2091/starting-with-interactive-brokers-ib-no-data-feed