ID:264197
 
Code:
mob
proc
LvRefresh() // The hp proc. Call this whenever hp adds and or subtratcs
for(var/obj/Lvnumber/H in client.screen) // For var/hpnumber/N in client.screen
H.icon_state = "[copytext(num2text(round(level),100),H.position,H.position+1)]"//Changes the icon state to what's needed


Problem description:I get 0 errors when I compile but I still get runtime errors. Any help?

What runtime ?
Be more descriptive.
It's probably calling for a mob that has no client attached to it, very easy to resolve in fact you should be able to figure it out without help.
Check if they have a client attached first.