Touched: won't trigger when a player walks through part?

I created a raycast that makes a part and after .5 seconds i create another part with the same CFrame and size of the first one, but alot bigger. (it's a laser beam cannon im making)

However, the touched event is only working when the person who shot the laser walks through it, and not the other players.

			local beamDamage = Instance.new("Part")
			beamDamage.Parent = workspace
			game:GetService('Debris'):AddItem(beamDamage, 20)
			beamDamage.Transparency = .25
			beamDamage.Anchored = true
			beamDamage.CanCollide = false
			beamDamage.Material = 'Neon'
			beamDamage.CFrame = beam.CFrame
			beamDamage.Size = Vector3.new(5,5,distance+20)
			beamDamage.BrickColor = BrickColor.new("Really red")			

			beamDamage.Touched:Connect(function(hit)
				print('touched')
				if hit.Parent then
					local humanoid = part.Parent:FindFirstChild('Humanoid')
					if humanoid then
						if canDamage == true then
							humanoid:TakeDamage(80)
							canDamage = false
						end
					end
				end
			end	)			
	
			wait(3)
			canDamage = true

this is a local script, but FE is off.

You seem to be searching for the Humanoid from part's Parent, but part has not been defined. You should be looking in hit's Parent.

local beamDamage = Instance.new("Part")
beamDamage.Parent = workspace
game:GetService('Debris'):AddItem(beamDamage, 20)
beamDamage.Transparency = .25
beamDamage.Anchored = true
beamDamage.CanCollide = false
beamDamage.Material = 'Neon'
beamDamage.CFrame = beam.CFrame
beamDamage.Size = Vector3.new(5,5,distance+20)
beamDamage.BrickColor = BrickColor.new("Really red")    
local canDamge = true     

beamDamage.Touched:Connect(function(hit)
	if not canDamage then return end canDamage = false;
	local humanoid = hit.Parent:FindFirstChild('Humanoid')
	if humanoid then
		humanoid:TakeDamage(80)
	end
	wait(3)
	canDamage = true;
end )