I also asked Denki many months ago to add a "Repeat until ? Storage Empty" option and a "Repeat until ? Storage Not Empty" option. I was told that it would be added to the new version of Autonauts. Since then I have come up with another way to check for Empty by stowing and cycling the object and using the "failure" down arrow to test it, as shown below. If there is any butter in the storage, the inner loop will continue to run and the bot will shout "ButterNotEmpty". If there is no butter in the storage, the inner loop fails and the bot will shout "ButterEmpty" and then wait 10 seconds before it repeats the outer loop.
