Hey i am make script:

init()
{
	while(1)
	{
		self thread noIsOnGround();
		wait .05;
	}
}

noIsOnGround()
{
	for(;;)
	{
		players = getentarray("player", "classname");
		for(x=0; x<players.size; x++)
		{
			player = players[x];
			
			if (!self isOnGround() && player isOnGround())
			{
				self iprintlnbold("You are no is on Ground");
				iprintlnbold("Player are is on Ground");
			}
		}
		wait .05;
	}
}

And i have that error:

Struct is not an entity.

ask yourself:
what is self here:

init()
{
	while(1)
	{
		self thread noIsOnGround();
		wait .05;
	}
}

what is self here:

			if (!self isOnGround() && player isOnGround())
			{
				self iprintlnbold("You are no is on Ground");
				iprintlnbold("Player are is on Ground");
			}

answer: in this case self is level is struct

Infinite loop inside infinite loop (both have waits, thats a positive) will be ok for the first half second your mod is run. After that, lagg is imminent and will increase probably exponentially. (all those iprintlnbolds... pff)

Self = I am
Player = Other players

How repair my script ?
How to make "self" and "player" in a script?

Read http://modsonline.com/Forums-top-134675.html

And quit thinking that self is you!
World does not revolve around you!

Thank You :) But A bit of culture...
Not everyone can write professionally scripts...
And especially if we have to learn very little time, yet are more important things in life.
A little understanding, I try to write scripts myself but sometimes I do not know the rules that should be followed in creating scripts.

If you think that I am writing on this forum someone wrote for me scripts you're wrong...
Just from time to time I need someone to explain something to me only.