WEB3 API Parameters

Hi,
i am trying to use the WEB3 API with sending parameters. but seems i am to stupid to figure out the right format. i am using lot of functions without need of adding parameters, and them working without any problem.

so my question is how to add for example an address to the parameter so can call a contract function with gives me for example dividends of an specific address.

talking about this stuff here :slight_smile:

{
  "abi": [],
  "params": {}
}

Thank you for your help!