GetActivityHistory Results dont change with mode parameter?

So my problem here is that I'm trying to figure out how to filter GetActivityHistory by game mode. Obviously must be doing something wrong, because I get the same results no matter what I put for mode. This is how I'm calling it using PHP: $urlgamehistory = 'https://www.bungie.net/Platform/Destiny/Stats/' . $platform . '/' . $memberid . '/' . $charid . '/?mode=14'; echo loadstats($apiKey, $urlgamehistory); The results always end up Response->allPvP->allTime-> with no change in values anywhere. I've tried using mode=TrialsOfOsiris and changing mode names and numbers, just confused here.