How to use Baselines or streams with the selectionDialog for Requirements via RestAPI

Hi,

I am looking for the Parameter to tell the "https://server:9443/rm/_ajax-modules/com.ibm.rdm.web.RRCPicker" to look into a specific baseline or stream.

The parameter projectURL works fine for selecting different components within an project.
The if I do a GET for a requirement with the parameter "oslc_config.context" pointing to a baseline or stream, it works fine.
But if I use the same parameter "oslc_config.context" or "vvc.configuration" along with the selection Dialog like:

"https://server:9443/rm/_ajax-modules/com.ibm.rdm.web.RRCPicker?projectURL=ComponentUrl&oslc_config.context=BaselineUrl/StreamUrl#oslc-core-postMessage-1.0"
or
"https://server:9443/rm/_ajax-modules/com.ibm.rdm.web.RRCPicker?projectURL=ComponentUrl&vvc.configuration=BaselineUrl/StreamUrl#oslc-core-postMessage-1.0"

it isn't working (empty page with "ok" and "cancel" Buttons).

please help