Hello,
I'm trying to create a spell to change the stairs/logs/rails/etc. direction. For example, if a log is in the y axis, I'd like it to change to the z and then back to the x (cycling way).
For the stairs, just the "facing" parameter should change, as for the rails, just the shape should change.

Another spell to change the shape of the stairs (straight or corner) and its full half could be added, but I'd need the parameters to do so...
Thanks for updating this magnificent plugin to 1.14 by the way,
Elsopéen

Unfortunately I don't think this is possible in 1.14 and up, I have no way to modify that sort of block data. I'll keep this open for a potential future feature.

I do think I'd need to drop backwards compatibility to do this properly, but we'll see if I get super creative with reflection. I would like to make Alter able to do this again.