local cooldown = 0
local ped = GetPlayerPedId(ped)

RegisterNetEvent('useweed')
AddEventHandler('useweed', function()
   if cooldown ~= 0 then
     SetEntityHealth(ped, 0)
     ShowNotification('u ded')
   elseif
      if GetEntityHealth(ped) == GetEntityMaxHealth(ped) then
         SetEntityHealth(ped, 0)
         ShowNotification('u ded')
     else
         SetEntityHealth(ped, GetEntityMaxHealth(ped))
         cooldown = 30
         while cooldown ~= 0 do
             cooldown = cooldown - 1
             Wait(1000)
         end
     end
   end
end)