For FinalBuilder 5 we've added a new set of actions for storing and retrieving data in stacks and queues. These actions allow you to build up a list of items and then access them them in either a first in, first out (Queue) or first in, last out (Stack) manner. Create a new Stack or Queue using the Define action, and then to add items, use the Push or Insert actions. To use the items in the list, either use the Pop action to access them one at a time, or use the Iterator to perform the same action on each item until the list is empty.