Can I increase or decrease the NumberOfInstances in Multie Instance Activity?

Camunda 7 Topics Discussion & Questions
1

As part of my understanding of MultiInstanceActvity - I understand how I can complete the activity as such. I have scenario that AFTER a MultiInstance is instantiated - we have a use case where we can ADD or DELETE the number of instances :slight_smile:
The current multiInstance activity tracks the total number of students studentsList. We can update the UI thats tied to this workflow to ADD more students - what we want is if this happens - then studentsList can increase in size and we want the MultiIntanceActivity total count to increase based on this. Currently - when I complete a task with studentsList size > the one it was initialized with - it doesnt take into account the newer entries. So if It was created with 2 but we want to increase it to 3 - I want to be able to move forward by honoring 3 students. Right now its only honoring 2.
How can I achieve this?

2

you can set completion condition in multi instance task as follows,
${nrOfCompletedInstances==x}

where x is a variable holding number of the students for example. so completion condition depends on the value of x.

3

nrOfCompletedInstances Value can be changed dynamically? On the fly?

Ideally it is expected to increase in this case then.

4

sorry I get it now, I think there is no way to update the collection list of multi instance task dynamically after the task created.

the following link is about the same issue :

5

Can I CANCEL the current Activity and Re-Initialize it when Iā€™m at that step in the workflow?
I came across this thread in StackOverflow but there was no corroboration on if the suggested solution would even work and it has no upvotes.

6

Thanks. Got it now.

7