function CommonFun.calcBuff_6397(srcUser, targetUser, a, b, c, d, lv)
  if srcUser == nil or targetUser == nil then
    return 0
  end
  local Hp = srcUser:GetProperty("Hp")
  local MaxHp = srcUser:GetProperty("MaxHp")
  local A = (MaxHp - Hp) * a
  return A
end