[Schocc]

Poste o cуdigo;

@edit:
Tente com esse exemplo:

pawn Код:

//      Em OnPlayerConnect
SetPlayerCheckpoint(playerid, 1284.47460938,-1539.75805664,13.54402828, 5.0);



public OnPlayerEnterCheckpoint( playerid )
{
    ShowPlayerDialog( playerid,124, 1, "testing", "Lines", "Enter", "Exit" );
    return 1;
}