The keyword isn't working for me; here's the debug output:
[2018-11-06 14:46:04][input.scriptfilter] Queuing argument '(null)'
[2018-11-06 14:46:04][input.scriptfilter] Script with argument '(null)' finished
[2018-11-06 14:46:04][ERROR: input.scriptfilter] Code 1: 0:61: execution error: Not authorised to send Apple events to Things3. (-1743)
It used to work at one point, but that was quite a while ago (I've simply not got around to looking deeper into the issue until now).