[XSlayer]

Solved!

PHP Code:

public __getClientMODEL()
{              
    set_string( 2, __Player_MDL[get_param(1)], get_param(2) );
} 


PHP Code:

       static MDL[64];
        getClientMODEL( Client, MDL, 63 );

       entity_set_model( __Avatar[Client], MDL );