Okay, uploaded new version of this system: BloodSystem by R0mAAn - Roblox
Also, just a mini tutorial how to call blood:
Put this line inside of Server Script (Like, just Script) in workspace or any script you have.
local pos = --Position where the blood goes from. You can type here workspace.YourName.Head.Position
game.ReplicatedStorage.GoreEvent:FireAllClients(10, pos)