CommonFun.calcBuff_7730
function CommonFun.calcBuff_7730(srcUser, targetUser, a, b, c, d, lv)
  if srcUser == nil or targetUser == nil then
    return 0
  end
  local Hp = srcUser:GetProperty("Hp")
  local Hp2 = targetUser:GetProperty("Hp")
  local skilllv = srcUser:GetLernedSkillLevel(2426_:UNIVERSE_FUSION)
  local Value = srcUser:GetGemValue(193001_UNIVERSE_FUSION_INCREASES_THE_ENEMY_S_HP_LOSS_BY_PERCENTAGE)
  local A = 0
  if a == 1 and b == 0 then
    A = -Hp * skilllv * c
  end
  if a == 0 and b == 1 then
    A = -Hp2 * skilllv * c * (1 + Value / 100000)
  end
  if targetUser:GetNpcID() ~= 0 then
    A = 0
  end
  return A
end