Array Out Of Bounds Error - How to check if there are History objects?

Hi

i try to read the activity history with:

var acthis = ActivityMonitor.getHistory();

  var his0_goal = acthis[0].stepGoal;

  var his0_steps = acthis[0].steps;

  var his1_goal = acthis[1].stepGoal;

  var his1_steps = acthis[1].steps;

If there is a history, everything works fine. But if not i get an
"Array Out Of Bounds Error" - Error.

How can i check if the history array contains "n" objects?

Sorry for this stupid basic question, its quite a long time ago since i wrote some kind of code ;-)
Thanks
Achim

dezent over 10 years ago

as usual...

searching 15 minutes for a solution... writing a post ... searching another 30 seconds ...finding the solution.

for(var i = 0; i < acthis.size(); i ++)

  {

   Sys.println(i); 

 }

array.size() works fine.