:FireClient() Doesnt Change Transparency For Gui in PlayerGui?

what this script is supposed to do is that when the RemoteEvent is fired, the player who fired the scripts GUI (aka playergui) will change the transparency for the GUI by taking away -.25 for every GUI object listed in the script, once that repeated 4 times, the script will wait 10 seconds before kicking the player who fired it. but the script doesn't work, it doesn't change the gui's transparency or anything at all, if anyone could find a solution that would be great

Script (LocalScript)

local a = game.ReplicatedStorage["Finish Game"]
local b = game:GetService('Players').LocalPlayer.PlayerGui
local c = game:GetService('Players').LocalPlayer


a.OnClientEvent:Connect(function()
	b.Ending.Enabled = true
	for i = 1, 4 do
	b.Ending.Frame.BackgroundTransparency -= .25
	b.Ending.Frame.ImageLabel.ImageTransparency -= .25
	b.Ending.Frame.ImageLabel.UIStroke.Transparency -= .25
	b.Ending.Frame.TextLabel.TextTransparency -= .25
	b.Ending.Frame.TextLabel.UIStroke.Transparency -= .25
	wait(.1)
	end
	
	wait(10)
	c:Kick("Thank You For Playing")
end)

The only thing I can see that might be the problem is that you used - instead of + for the transparency part. I don't think that would cause the script to not work though So I fixed a few things. Like the local player part to :GetService I also added prints to try to narrow in on the problem. Let me know what prints are not being printed to narrow in on the issue.

local a = game.ReplicatedStorage["Finish Game"]
local b = game.Players.LocalPlayer.PlayerGui
local c = game.Players.LocalPlayer
print("Local Fine")

a.OnClientEvent:Connect(function()
print("Got Event")
    b.Ending.Enabled = true
    for i = 1, 4 do
print("Transparency")
    b.Ending.Frame.BackgroundTransparency -= .25 --maybe try changing + to -
    b.Ending.Frame.ImageLabel.ImageTransparency -= .25
    b.Ending.Frame.ImageLabel.UIStroke.Transparency -= .25
    b.Ending.Frame.TextLabel.TextTransparency -= .25
    b.Ending.Frame.TextLabel.UIStroke.Transparency -= .25
    wait(.1)
print("Done")
    end

    wait(10)
    c:Kick("Thank You For Playing")
end)

Hope this helps!!

Updated You can get the player by doing something like this.

part.Touched:Connect(function(hit)
    local player = game:GetService("Players"):GetPlayerFromCharacter(hit.Parent)
    if player then
game.ReplicatedStorage.RemoteEvent:FireClient(player)
       
    end
end)

I think there is a problem in the for statement, however, I can't find out exactly yet.

local event = game.ReplicatedStorage["Finish Game"] --most likely the remote event
local plr = game:GetService('Players').LocalPlayer --the player
local playergui = game:GetService('Players').LocalPlayer.PlayerGui --player gui
event.OnClientEvent:Connect(function()
	playergui.Ending.Enabled = true
	for i = 1, 4 do
    		playergui.Ending.Frame.BackgroundTransparency += .25
   		playergui.Ending.Frame.ImageLabel.ImageTransparency += .25
    		playergui.Ending.Frame.ImageLabel.UIStroke.Transparency += .25
    		playergui.Ending.Frame.TextLabel.TextTransparency += .25
   		playergui.Ending.Frame.TextLabel.UIStroke.Transparency += .25
		task.wait(.1)
	end

	--now, instead of kicking through the client, we will kick through the script that sent this remote, as seen below
end)

--everything that comes before this event is fired
game.ReplicatedStorage["Finish Game"]:FireAllClients() --fires for every player
task.wait(10.4) --time that it would usually take
for index,player in pairs(game.Players:GetPlayers()) do --loop through every player
	-- we will only be using player
	player:Kick("Thank you for playing!")
end

tell me if this doesnt work