Man.. thats why say hook because if i say !napalm 1-5 (which is piroity of napalm explosion, fire) x and y which are the cordinates..

and there make a fire effect with hurt, where players if caught by fire, secondly their health getting low... and by position closer to fire

Planet Earth to Salad Fingers, Planet Earth to Salad fingers : do you hear me ? We can only speak in English language. Do you u n d e r s t a n d us ?

Seriously. That was a mashup of random words and things you want. Nothing clear enough to understand.
I can only assume that you want to create state for a player that he starts burning and stays burning for a while, rather than actually getting burned if he's near a fire ?

Salad Fingers to Planet Earth:
Sorry, i am ill today, may i have high temperature too

So, when somebody type into chat !napalm then a number from 1 to 5 (its means size of napalm) then cordinates(xy)
its makes a napalm bomb at that cordinate. (also it's can be done only with enough money, which depend of size of napalm 1 size of napalm 1000$ 2 size of napalm 2000$,etc)
what i did in the script.. i just want to get help for make player's health lower(so the "hurt" part)
and secondly health reduce, too

@ Rainoth:
"Do you mean that the closer the person is to fire, the more damage he receives ? " so this <--