In the operator's transportation, items are stacked in the Z direction.
This will clearly animate the number of flow items.
However, in the processor, the items are displayed overlapping, so it is difficult to understand the number of flow items.
Therefore,
I thought, I want to animate the items to stack in the Z direction even on the processor.
I will attach the model I thought of.
In this model, I thought about changing "item.location.z" using "current.subnodes.length".
However, this model had a problem that the item floated in the air when the second batch was input.
How can I change the model so that the items in the second batch do not float in the air and are stacked in the Z direction?