Use an 'entity iterator' bracket, which you can find in the world management tab. (It should also take a radius.) Entity iterators run a procedure, but apply it to every entity within a cube. (If you really want it to be a radial circle effect, there's some annoying math you can do to get that working.)
Just keep in mind that any 'event/target entity' blocks that you put inside the entity iterator need to be replaced with 'entity iterator.' (This way it targets each entity in the radius, not the entity that triggered the procedure.)
Use an 'entity iterator' bracket, which you can find in the world management tab. (It should also take a radius.) Entity iterators run a procedure, but apply it to every entity within a cube. (If you really want it to be a radial circle effect, there's some annoying math you can do to get that working.)
Just keep in mind that any 'event/target entity' blocks that you put inside the entity iterator need to be replaced with 'entity iterator.' (This way it targets each entity in the radius, not the entity that triggered the procedure.)