Variable doesn't update with connects?

What i'm trying to do is edit a variable so when a child is added/removed it will connect a function..

wait(3)
player = game.Players.LocalPlayer

function Party()
	this = nil
	this = game.Lighting.Party:FindFirstChild(player.InParty.Value)
end

function update()
	Party()
	print(this)
	local Slots = script.Parent:GetChildren()
	local ok = this:GetChildren()
	wait(1)
	for i = 1, #Slots do
		for a = 1, #ok do
			if i == a then
				Slots[i].Text = ok[a].Name
			end
		end
	end
end

function deupdate()
	local retext = script.Parent:GetChildren()
	for i = 1, #retext do
		if retext[i]:IsA("TextLabel") then
			retext[i].Text = ""
		end
	end
	update()
	
end

update()
Party()

this.ChildAdded:connect(deupdate)
this.ChildRemoved:connect(deupdate)

in function Party it's meant to update the variable "this" It only works with the original variable. Do I also need to update the connects at the bottom of the script?

Yes you also need to update the connects at the bottom. Also, you should declare the this variable beforehand.

wait(3)
local player = game.Players.LocalPlayer
local this
local update
local deupdate

function Party()
    this = game.Lighting.Party:FindFirstChild(player.InParty.Value)
    this.ChildAdded:connect(deupdate)
    this.ChildRemoved:connect(deupdate)
end

function update()
    Party()
    print(this)
    local Slots = script.Parent:GetChildren()
    local ok = this:GetChildren()
    wait(1)
    for i = 1, #Slots do
        for a = 1, #ok do
            if i == a then
                Slots[i].Text = ok[a].Name
            end
        end
    end
end

function deupdate()
    local retext = script.Parent:GetChildren()
    for i = 1, #retext do
        if retext[i]:IsA("TextLabel") then
            retext[i].Text = ""
        end
    end
    update()
end

update()
Party()