How come if something is replicated with a localscript it isn't done on the server?

It seemed to work a few months ago. It's done by putting a localscript within a tool, and on the press of a key it replicates the corresponding part. But it doesn't work on the server. So how else can I write the script? Here is an example of what I'm using.

uis.InputBegan:connect(function(input,process) -- Skill Five
if not process and active == true and   input.KeyCode == Enum.KeyCode.V and player.PlayerGui.PlayerUI.Skills.Skill5.Visible == true and stunned == false then
player.PlayerGui.PlayerUI.Skills.Skill5.Visible = false
wait(0.3)
 local         bullet = game.ReplicatedStorage.Necro.Raise:Clone()
        bullet.Parent = game.Players.LocalPlayer.Character.Holder
        bullet.CFrame = game.Players.LocalPlayer.Character.LeftHand.CFrame	y = Instance.new("BodyVelocity")
		y.maxForce = Vector3.new(math.huge, math.huge, math.huge)
		y.velocity = player.Character.HumanoidRootPart.CFrame.lookVector*50
      	        y.Parent = bullet
wait (15)
player.PlayerGui.PlayerUI.Skills.Skill5.Visible = true


 end end)

A LocalScript is on the client and any changes made to the game from the client will not replicate to the server. That means that any thing put into the game via a LocalScript will not be changed on the server and will only affect the client. You will have to look into remote events and functions to allow communication between the client and server. Here is a link, Hope this helps and have a great day scripting!