why does it not detect the input?

[true perch]

local function close(plr)
    print("hi")
    plr.PlayerGui.autoGui.Enabled = false
end

script.Parent.closeGui.Activated:Connect(close)

(i put the print to test if it detected the input, and it doesn't)
also heres an image of what the gui and its thingies are

[unique sedge]

You should be using a LocalScript (or change the RunContext to Client)

[true perch]

k thx