Incrementing variable count in AnyLogic

Question

I am building an agent-based-model in AnyLogic to show the progression of learners from one grade to the next throughout highschool. My states (Grade 8 up until Grade 12) have been drawn in my agent 'page' as shown below.

I have defined the transition rules for all states based on different agent variables. In order to see if my basic model is working, I have added getMain().dropout_count++ to the 'Entry action' of my 'Dropout' state. I also have a variable called dropout_count in my Main simulation page that should show the how many learners have dropped out.

However, I can't get passed this point. I keep getting the error that

The method getMain() is undefined for the type Learner

What am I doing wrong or what am I missing? It seems like the most trivial error yet I have no I idea how to fix it.

Not sure why getMain() is not incrementing the dropout_count.

Answer 1

Either use main or get_Main() (note the difference to your getMain()!!). Both work if your Learner is embedded into Main as an agent population.

If not, you can always brute-force using ((Main)getRootAgent) instead.

In any case: start using code-complete as it tells you what you can and cannot code in any place: https://anylogic.help/anylogic/ui/using-intelli-sense.html

Last, understand your model hierarchy: https://anylogic.help/advanced/code/access.html#where-am-i-and-how-do-i-get-to