PX4 unable to load custom gazebo world

I’ve dropped my custom world to the /simulation/gazebo_classic/sitl_gazebo-classic/worlds directory.

Additionally, in sitl_targets_gazebo-classic.cmake, I’ve added the name of my world “test_delete” to the set of worlds along w/ the preinstalled worlds.

When I run " make px4_sitl gazebo__test_delete "

I am given the following error:

ninja: error: unknown target ‘gazebo__test_delete’
make: *** [Makefile:232: px4_sitl] Error 1

Am I missing a step somewhere?

I’ve got the same error , has this been resolved yet?