[Bug] gossip selection doesn't work as intended

[Bia10]

Been experimenting with trainer gossip and here's something fishy i did not get to bottom of:

Once you have gossip frame open with trainer following scenarios unfold:

1. Bot.Wow.SelectGossipOptionSimple(1);

which calls:

public void SelectGossipOptionSimple(int gossipId)
{
  LuaDoString($"SelectGossipOption({gossipId}))");
}

result: does nothing

2. Bot.Wow.SelectGossipOption(1);

which calls:

public void SelectGossipOption(int gossipId)
{
  LuaDoString($"SelectGossipOption(max({gossipId}, GetNumGossipOptions()))");
}

result: unlearn talents frame opens

3. Using dev-tools and calling LuaDoString with "SelectGossipOption(1)"

result: learn skills frame opens

So the question is how are the case 1 and 3 different? if they lead to such drastically different results.

[Bia10]

mystery solved there's an extra brace ) in SelectGossipOptionSimple()