Water body island overlap

Hi everyone, I would like to create blue print which awaits when object drops on island (a ball and etc).
I used blue print for object: Event tick → Get actor of class (ball) → Get actor of class (water body island) → Is overlapping
but it doesn’t work at all, looks like water body island doesn’t have collision.
So what’s the best approach to realise this blue print ? Should I use box instead water body island ? I’m not sure that box is the best solution because we have to check is the object on the body island (not above)