Dont know, its late, but maybe this is what you are looking for

Code:

---

recheck_if_I_have_to_create:
while(1)	
{		
	
	if(enemy_count < max_enemy_count) //No enemies created yet or there are dead ones		
	{			
	ent_create("speeder.mdl",my.x,enemy_flight);			
	enemy_count += 1;		
	}
	else//there are 5 enemies created atm
	{
	break;
	}		
	
wait(5);	
}
goto recheck_if_I_have_to_create;

---

Hope this helps...

For your 2. question, use my.skill.
For example:
Code:

---

define ent_id;

action
{
id_counter += 1;
my.ent_id = id_counter;
}

---