Files.GetDirectory please help me

Hello.

Any people could explain me why this give me error:

var url:String =’http://192.168.1.150:8080/jsonrpc?request={“jsonrpc”: “2.0”, “method”: “Files.GetDirectory”, “params”: {“properties”: “directory”: “home”, “media”: “files”}}’

Inside videos –> Files –> Movies (This is the path)

ERROR:

{“error”:{“code”:-32700,”message”:”Parse error.”},”id”:null,”jsonrpc”:”2.0″}

I am new and I not find all the tree of jason to understand..

Sorry my bad english.