Why isn't this script changing the value of its Parent?

script.Parent is an IntValue and the IntValue's parent is also an IntValue. This script is stored in game.ServerStorage until an event elsewhere is triggered. Once the event is triggered it moves it into the IntValue. The script goes to it's destination but it doesn't change the value of it's parent. The parent's parent has a value.

I don't know how to fix this, I tried adding an AncestryChanged event but that doesn't work because the script doesn't enable until it's out of the storage and by then it's parent is already the IntValue.

Actually, the script doesn't even run because when I tested it I had a print("string") on line 1 and it never printed anything. I checked if the script was disabled but disable was false.

I don't know what else I could do :|

    local plrpressure = script.Parent
    local plrlvl = script.Parent.Parent

    if plrlvl.Value >= 0 and plrlvl.Value < 1000 then
        plrpressure.Value = 2
    elseif plrlvl.Value >= 1000 and plrlvl.Value < 3000 then
        plrpressure.Value = 3
    elseif plrlvl.Value >= 3000 and plrlvl.Value < 10000 then
        plrpressure.Value = 4

    end