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)