More about HttpRbxApiService?

Hey there, I'm looking to have a way to change someone's rank in-game, and when looking through the playerlist script, I found this on lines 971-979:

local function onFollowButtonPressed()
	if not LastSelectedPlayer then return end
	--
	local followedUserId = tostring(LastSelectedPlayer.userId)
	local apiPath = "user/follow"
	local params = "followedUserId="..followedUserId
	local success, result = pcall(function()
		return HttpRbxApiService:PostAsync(apiPath, params, true, Enum.ThrottlingPriority.Default, Enum.HttpContentType.ApplicationUrlEncoded)
	end)

This function allows a user to follow another user. I'm looking for a way to this with changing groups in-game, though. If this doesn't work, I might as well try my other method using the other httpservice.