Opening PGN from URL (as the web)

As it's already working in the web, I will like to be able to open a game from url with PGN.

Something like:

"https://lichess.org/analysis/pgn/"+pgn + "?color=" + color

For the moment it's not working. While fen does:

url="https://lichess.org/analysis/"+fen+ "?color=" + color;

thanks