[Locky_]

pawn Code:

public OnPlayerUpdate(playerid) {
    if(IsPlayerInRangeOfPoint(playerid, 2.0 2553.7996, -2186.4495, 1.6777) && gettime() > GetPVarInt(playerid, "abrirDialog")) {
        ShowPlayerDialog(playerid, IrParaGrove, DIALOG_STYLE_LIST, "Teleportes do Esgoto", "Grove Street", "Selecionar", "Sair");
        SetPVarInt(playerid, "abrirDialog", gettime() + 15);
    }
    return 1;
}

Tente..