Grasshopper Trim not working as expected

FireEngine-Junction.gh (248.6 KB)

Hi,

I am trying to visualize which plot boundaries of a development area are a certain distance from the corners of each plot corner. I drew a circle of radius 30m from each corner and used the Trim with Regions component to calculate the curves inside and outside the region.

The inside region output works perfectly, but the outside region output is not working as expected - it simply returns me all of the original curves. Is there something wrong with the format of my input data?

Thank you!