Cannot make entity immune to pushing

I am making a statue-sort of entity, and I want to it be immovable when spawned. To do this I tried checking the "disable collision box" box in the entity settings, however, the statue still is collide-able and "pushable". I also tried adding a custom code thing in the .java file (pictured), however, the statute still can be pushed. Is there another method or code I could use to get this to work? I want the statue to not be movable whatsoever by entities walking into it, even if that means they just walk through it.