How do I set the scale of an actor to grow/shrink according to how many items are in my inventory?

[Marcis]

You can convert the length to float and plug it directly into the New Scale 3D. If the array length is 5, for example, the size of your backpack will be set to 5,5,5. If the array length is 0 the scale will also be 0. That’s why I added the max node to prevent 0 scale unless you want that.