script.Parent.ClickDetector.MouseClick:connect(function(p) p.PlayerGui.CheckIn.Frame.Visble = true end)
Umm everytime I click the mouse for self check in It wont work and I keep trying. I'm trying to make my self check in Filtered Enable but it wont work can anyone help me?
Guessing this is done through a server script if that's the case then a server script can't access PlayerGui so it has to be done through a localscript using remote events or functions.
https://wiki.roblox.com/index.php?title=Remote_Functions_%26_Events
Try make a clone of GUI from ReplicatedStorage.
Example:
local Gui = game:GetService("ReplicatedStorage"):WaitForChild("GUINAME") script.Parent.ClickDetector.MouseClick:connect(function(p) local GetClone = Gui:Clone() GetClone.Parent = p.PlayerGui end)