My click counting script will not work?

I have a script where when you click on a part it will add to a variable and if the variable is 70, if the part was clicked 70 times, it will change the transparency of a decal on a part, but my if then statement does not want to work. Script:

local CD = workspace.Clock.ClickDetector
local CC = 0

CD.MouseClick:connect(function(click)
    CC = CC + 1
end)

if CC >= 70 then
    workspace.Six.Decal.Transparency = workspace.Six.Decal.Transparency - 1
end