this is easy script but idk why it wont work it's a script in side a tool ,how do i fix?

local di = true
script.Parent.Activated:Connect(function()
	 while di == true do
		wait()
		script.Parent.RightHand.ParticleEmitter.Rate = script.Parent.RightHand.ParticleEmitter.Rate + .12

	end
		local p = Instance.new("Part",game.Workspace)
		local x = Instance.new("BodyVelocity",p)
	
	
end

Alright, here's the modified code. Not sure if this is the answer, but here it is.

local di = true
script.Parent.Activated:Connect(function ()
     while di == true do
	wait()
        script.Parent.RightHand.ParticleEmitter.Rate = script.Parent.RightHand.ParticleEmitter.Rate + .12

    end
	local p = Instance.new("Part")
	p.Parent = game.Workspace
	local x = Instance.new("BodyVelocity",p)
end)

Here's some things in mind. The way you used the Instance.new() constructor function is deprecated. It's better to parent it after the creation. (or later) A right parentheses ) was forgotten at line 11, column 4, since you didn't create the callback function earlier (but that works!)