here's my script
game.Players.PlayerAdded:Connect(function(Player)
Player.CharacterAdded:Connect(function(Character)
local Stats = Player:WaitForChild("leaderstats")
local Level = Stats:WaitForChild("Level")
local Strength = Stats:WaitForChild("Strength")
Strength = (Level.Value*2)+1
end)
end)

1 comment
I also had the same issue, but i solved it with remote events. I dont think the server can manipulate intvalues in a player.