how do i detect how many of a type of entity there is on my level?

Can be :
Code:

---

var count;
function ent_counter()
{
   you = ent_next(NULL);
   while(you != NULL)
   {
       // if (you.skill1 == 1)  // count entity of the same type
       // {
              count += 1;
       // } 
       you = ent_next(you);
       wait(1);
   }
}

---