How does an AI script prioritize what items to hold?

[Gnuoy]

Does anyone know what AI controlled players use to pick up items? I have some custom items and the AI drops its better custom items for seemingly random items. Does it prioritize by the item's level? I can't really figure this out. Is it possible to edit what items the AI prioritizes holding in its hero's inventory?

Thanks for reading.

edit: it's "priority" setting in object editor.