Is this possible server side?

[pr3st0n]

function ITEM:onUse(activator, caller)

	if ( activator:IsPlayer() ) then
		activator:SetDSP(6)
	end
			function WeedOff(activator, caller)
					if ( activator:IsPlayer() ) then
						activator:SetDSP(1)
					end
			end
			timer.Create("WeedOff", 30, 1, WeedOff, activator)

end;

Currently thats the code I have right now.

I want to know if I can add motion blur to that?

It is being done server side. I can't make any other files the way my game mode is setup so it has to be done in a file called sh_weed.lua.