[SilverKiller]

Here is an example...

First, Create a New Spawned like this:

pawn Код:

new bool:Spawned[MAX_PLAYERS];

Then on the request class AND OnPlayerConnect (as i understanded you , you meant that if he didnt choose a skin, he cant do a command)

pawn Код:

Spawned[playerid] = 0;

After that, in your OnPlayerSpawn, Put this

pawn Код:

Spawned[playerid] = 1;

pawn Код:

if(Spawned[playerid] == 0)
// Your code if he is not spawned

And to check if he is spawned:

pawn Код:

if(Spawned[playerid] == 1)
//Your code

Hope i helped.

EDIT: when i was typing the message the poster above me answered -_-