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

[mrdavoodi64]

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 :

Update collection for multi instance sub-process

Hi @person_one, The number of instances are calculated once, when entering the activity which means any changes on the collection after that will not affect the # of instances of the multi instance activity.