AlliedModders - Creating callbacks in Sourcepawn

I'm trying to add a callback to a function I've designed which does some asynchronous actions. Using the example from Timers, I create a typedef:

HTML Code:

typeset ActionCallback {

  function void(float actions[2]);

}

And then I have a function attached to a methodmap which tries to call this "ActionCallback":

HTML Code:

  public void Save(ActionCallback callback) {

    int test[2];



    test[0] = 2;

    test[1] = 1;





    callback(test);

  }

Unfortunately, at the moment I'm getting a variety of errors that I have no idea how to solve. Namely:

C:\Users\\Documents\GitHub\ttt_sourcemod\rewr ite\includes\player_actions.inc(47) : error 012: invalid function call, not a valid address
C:\Users\\Documents\GitHub\ttt_sourcemod\rewr ite\includes\player_actions.inc(47) : warning 215: expression has no effect
C:\Users\\Documents\GitHub\ttt_sourcemod\rewr ite\includes\player_actions.inc(47) : error 001: expected token: ";", but found ")"
C:\Users\\Documents\GitHub\ttt_sourcemod\rewr ite\includes\player_actions.inc(47) : error 029: invalid expression, assumed zero
C:\Users\\Documents\GitHub\ttt_sourcemod\rewr ite\includes\player_actions.inc(47) : fatal error 190: too many error messages on one line

Does anyone know why my callback is not being identified as a function?