ok, is there a video showing how to use it?
In nutshell, if you don't know programming languages it's next to impossible for person to use it in practice. That said community might come up with some neat strings of code eventually to make quest structures, UI and such possible to utilized for our own creation. Allowing creators who aren't versed with coding able to adjust certain lines of code and with less knowledge able to use these bits in their stuff.
If you are interested in the documentation:
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and general LUA manual they are refering to:
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it would be cool if they would come up with 2nd set of examples in a map like they did with the automation blocks.