Upgrading a value if you have 5 or more gems?

This is supposed to upgrade the value MaxHealth which is in the model ds, if you have 5 Gems or more only. What is wrong?

local player = game.Players.LocalPlayer	
local health = player.ds.MaxHealth
local gems = player.ds.Gems

function Click()

if	gems.Value >= 5 and health.Value >= 120 then
	gems.Value = gems.Value - 5
	health.Value = health.Value + 20	
	script.Parent.Parent.Parent.Script.Disabled = false
	wait(.2)
	script.Parent.Parent.Parent.Script.Disabled = true
	
elseif 	gems.Value >= 5 and health.Value == 100 then
	gems.Value = gems.Value - 5	
	health.Value = 120
	script.Parent.Parent.Parent.Script.Disabled = false
	wait(.2)
	script.Parent.Parent.Parent.Script.Disabled = true
end
end

script.Parent.MouseButton1Down:connect(Click)

By looking at your script it seems that you did not define "ds" Unless "ds" is a descendant of LocalPlayer And "MaxHealth" is a descendant of "ds" although MaxHealth is usually a Property of Humanoid or a custom health bar.

If you send me the whole model or whatever you can give me over ROBLOX I can attempt to fix it for you but just from looking at this I cannot help.

All I can say is to define you paths better from my point of view.

Roblox: SurvivalAptissimum