Human does not give value when clicked?

Hello, i am making a clicker game that has 6 buildings and i implanted a data store system for saving cash, but i want it to save Buildings... and one specific building i want to test if it updates is Human. I want to test if Human can be saved and i put something in the script that makes it add value when it is clicked. But it is not working, so how do i fix this?

plr = script.Parent.Parent.Parent.Parent.Parent
Cost = script.Parent.BuildingCost.Cost
CPS = script.Parent.Parent.Parent.CPS
HumanValue = plr.leaderstats.Human.Value

script.Parent.MouseButton1Click:connect(function()
    if plr.leaderstats.Cash.Value >= Cost.Value then
        HumanValue = HumanValue + 1
        if true then
        plr.leaderstats.Cash.Value = plr.leaderstats.Cash.Value - Cost.Value
        script.Parent.BuildingCost.Cost.Value = script.Parent.BuildingCost.Cost.Value + 6
        script.Parent.BuildingCost.Text = "Requires $"..Cost.Value.. ""

        CPS.Value = CPS.Value + 1

        end
    end
end)

BTW: My old question didn't get any answers so i made a new question.

wait i also have another problem too