This script gives the player health, but immedtailty taes it away, can someone please help?

So this is a local script that is inside Starter Player, that has a Remote Event. when this script is ran when pressing R, it adds the health you need (Yay! :D) then takes away the health you gained seconds later, to return to health back to its original percent. (No! D:) If anyone could help with this, that would be great.

local repStorage = game:GetService("ReplicatedStorage")

local remote = repStorage:WaitForChild("HealEvent")

  

remote:FireServer("argument")

  

game:GetService("UserInputService").InputBegan:Connect(function(key)

if key.KeyCode == Enum.KeyCode.R then

game.Players.LocalPlayer.Character.Humanoid.Health = game.Players.LocalPlayer.Character.Humanoid.Health + 99

end

end)

The reason why it changes the health back is because you are doing it on the client, not the server. Here is the code to do this:

Client Code:

  local repStorage = game:GetService("ReplicatedStorage")
    
    local remote = repStorage:WaitForChild("HealEvent")
    
    local remote2 = repStorage:WaitForChild("HealEvent2")
      
    
    remote:FireServer("argument")
    
      
    
    game:GetService("UserInputService").InputBegan:Connect(function(key)
    
    if key.KeyCode == Enum.KeyCode.R then
    remote2:FireServer()
    end
    
    end)

Server Code:

HealthTakesAway = 99
game.RelicatedStorage.HealEvent2.OnServerEvent:Connect(function(plr)
if workspace:FindFirstChild(plr.Name) then
workspace[plr.Name].Humanoid.Health = workspace[plr.Name].Humanoid.Health + HealthTakesAway
end
end)

Hope this helped you :)