In Episode 09 of my Ultra Modular Inventory + Interaction System series for UE 5.4, I’m getting back in the swing of things with a quick but super practical feature: inventory filtering. A bunch of people in the Discord were basically asking for “some kind of filter function,” so in this video I build a clean way to show only certain item categories in the inventory grid—like food, weapons, materials, equipment, whatever you want—using Gameplay Tags. I add instance-editable Filter Tags on the parent Item Container Component (and I tuck those settings into a proper “Settings” category so it’s not a mess). Then inside the Item Grid widget, I create a Get Filtered Inventory function that takes incoming inventory slots + a tag container, loops the slots, and only keeps items that match. The key takeaway is: after filtering, you still need to resize the filtered array back to the original inventory length so your grid keeps its full empty-slot layout. I also hit a UE 5.4 gotcha where “Has Tag” didn’t behave like older versions for my use case, and switching to “Matches Any Tag” fixed it. Finally, I set up a Refresh Filtered Item Grid event so you can update filters at runtime (like button clicks) and choose whether to overwrite or append defaults—perfect for shops and specialized inventories.