Cron not working

Hello,

I've tried the cron example from michis documentation (and from the
Helma rfc wiki).

# apps.properties
cron.sthg.function = doSomething

# apps/reposita/Global/functions.js

function doSomething() {
   app.log("doSomething now actually does something!!!");
   return;
}

Should be called every minute, but nothing happens, any ideas?

thx
-stephan