MENU F4 FOR VIPS, How to call this function?

[jcrsscpv]

Hey guys!
I made a new tab on my F4 MENU inside the DarkRP called "Premium Shop" only for vips
but I can't understand a little of LUA CODE but I'm trying to learn and code it =), hmmm... and can any1 help me please?!

Like this:
IF people IS NOT VIP then SHOW A MESSAGE ("bla bla bla")
IF people is VIP or ADMIN then SHOW THE THINGS ...

function GM:VIPTab()
    local VIPTab = vgui.Create("DPanel") 
        //Called by DarkRP whenever the panel is shown to update its info. 
        VIPTab.Update = function(self) 
        end
		
    local VIPTab = vgui.Create("DPanelList")
		function VIPTab:Update()
		self:Clear(true)
		local text= vgui.Create("DLabel", VIPTab)
		text:SetText(" TEXT THAT SHOWN IN BOX !")
		text:SetColor(Color(255,255,255,255))
		text:SizeToContents()
end

        customCheck = function(ply)
        return ply:GetUserGroup() == "vip" or ply:IsAdmin() 
        if ply = vip or ply:IsAdmin then -- If ply is vip  or IsAdmin then return the menu
		return VIPTab end -- Returning the VIPTab if people is vip? (Super wrong =/ )
		
end

[Samg381]

Mabye a PLY:Check?
Not too familiar with lua.

[dogs eater]

try this

!self:IsUserGroup("VIP") and not self:IsSuperAdmin() and not self:IsAdmin()

       then GAMEMODE:Notify(self, 1, 4, string.format("bla bla bla")) 

       return 

       end