@ledi12
I am not sure if I understood you right, but you are looping over an output from find children?
- retrieving the count
- looping getting the last
Both can be done within an assign activity
count: YourFindChildrenOutputVariable.Count
Last Item: YourFindChildrenOutputVariable.Last
A particular item: YourFindChildrenOutputVariable.ElementAt(ItemPositionIndexInTheList)