Simple TeamChange script not working, help please?

I don't know why this isn't working. I made GroupID and GroupRank and TrainerTeam in ServerScriptService>HostService but I don't know what's wrong.

This is a Local Script.

local Player = game.Players.LocalPlayer
local SSS = game:GetService("ServerScriptService")
local HS = SSS:WaitForChild("HostService")
local GroupID = HS:WaitForChild("GroupID").Value
local GroupRank = HS:WaitForChild("GroupRank").Value
local TrainerTeamColor = HS:WaitForChild("TrainerTeam").Value

script.Parent.MouseButton1Down:connect(function()
	if Player:GetRankInGroup(GroupID) >= GroupRank then
		Player.TeamColor = TrainerTeamColor
		Player.Character:BreakJoints()
	end
end)

Screenshot

^That's the output. Apparently it's not getting HostService. But I made sure I named the Folder right and I put the right name in the script. I don't get what's happening.

The main reason is because you're using a localscript with ServerScriptService.

ServerScriptService DOES NOT replicate to clients.

As per the Wiki's definition of ServerScriptService:

A semantic, organized place to put your server-sided game logic, which does not interfere with the world. Scripts will run inside this service, and will not replicate to game clients, allowing for secure storage of your scripts.

If you moved all your things to Replicated Storage and changed line 2 to

local SSS = game:GetService("ReplicatedStorage")

The above would work due to the fact that since you're using a localscript, the objects MUST be replicated to clients.

Source:

http://wiki.roblox.com/index.php?title=API:Class/ServerScriptService