What is wrong with this script?

Trying to make this script so people in 1 certain rank can't change to the team, but all the other ranks can:

function Click(mouse) 
if script.Parent.Parent.Parent.Parent.Parent:IsInGroup(193585) then 
script.Parent.Parent.Parent.Parent.Parent.TeamColor = BrickColor.new("Bright blue") 
elseif script.Parent.Parent.Parent.Parent.Parent:IsInGroup(193585) and IsRankInGroup == 2 then
script.Parent.Parent.Parent.Parent.Parent.TeamColor = BrickColor.new("Institutional white")
end 
end 

script.Parent.MouseButton1Click:connect(Click)