Proxy settings

I would like to set some proxy settings in my Capella Studio plugin project, so I set Host, Port etc…in the Preference menu in the network connection tab. I also set http & https Host & Port in the eclipse.ini file but when I launch the code in Capella Studio I have error message that tells that “System property http.proxyHost is not set”. I don’t understand why I have this error message because I already set the proxy like I tell before.
Did someone has a clue ?