Reverse LOD effect?

How would I do like a reverse LOD - I want my particles in Niagara to spawn lets say 50+ units away, but STOP SPAWNING anything from 0-49 units.

On the render section there should be a min camera distance

This was one of the first things I tried but it made it spawn indefinitely, I ended up using scale sprite size, promoting it to lerp float and using LODdistancefraction