Click detector reveresed?

So I'm working on a game and in it you can buy stuff from clicking on buttons. But for some reason the MouseClick event only fires when I RIGHT click it. And I am very confused. Here is the code

clicker = script.Parent:WaitForChild("ClickDetector")

clicker.MouseClick:connect(function(player)
    if player.Credits.Value > 9 and player.Weapon.Value ~= "Dusty Needle" then 
        player.Credits.Value = player.Credits.Value - 10
        player.Weapon.Value = "Dusty Needle"
        tool = game.Lighting.Items:FindFirstChild("Dusty Needle"):clone()
        tool.Parent = player:WaitForChild("Backpack")


    end
end)