pass data into iframe as variable

[mchrenka]

I need to get a piece of data from my web application into my qlik sense app through an iframe.

How can I pass in something like a "company_id"

i.e.

http[s]://<machinename | servername>/{virtual proxy}/sense/app/{appid}/sheet/{sheetid}/state/analysis/options/{option}?company_id=34

and then read that company_id into a variable so I can use it in set analysis.