I had it working on a site, but it takes custom editing the Ace plugin to work. It’s not a viable solution unless you disconnect the plugin from the MODX Extras repo. There are open tickets currently about Ace TV types. Basically, you just need to adjust the plugin logic to fire on for TV’s of a specific type during the onDocFormRender switch. I wouldn’t recommend it if you aren’t ready to support the plugin with manual updates though.