How to know the sum of instance values ?

Hello,

Is it possible to know the sum of instance values of an object ?

By example, in my game, there are several birds. Each one have an instance value called "ChronoCount" which add 1 to a global value, every 0.05 sec, everytime ChronoOnOff = 1. And I need to get the sum of all instance values "ChronoCount" (in real time). I tried with "Pick by comparaison" (cf picture), but it's not working. It just count one bird at a time.

Thanks

rcmedy2

You could use Add Bird.PickedCount*Bird.ChronoCount to Joie_Count.

Just use that last condition. Pick bird with ChronoCount = 1.

Now the expression bird.pickedcount is the sum that you need.

I see (think) that is see that you intended to use sub events, but did not.

Stuff to read: https://www.scirra.com/manual/128/sub-events

Thanks for your replies

(I just noticed my second action was wrong... It's not "add Bird.ChronoCount to Joie_Count" but just add 1, otherwise it increases exponentially).

I tried with SimoneT solution , it's working but I have now an issue if I want to stop adding. It's only working when "Every tick", if "every 0.05 sec" the global value doesn't stop exactly at the same time of the instance value. I would like to manage the speed of adding. I have something like that :

99Instances2Go I didn't understand what you mean with sub events

Is ok, i see now that i captured that wrong.