I know that 1.11 /fill and /setblock use block data instead of block data. However, when I try to fill an area with sticky pistons facing up, it days that my data values are incorrect. I've tried the following with various capitalizations:
/fill x1 y1 z1 x2 y2 z2 sticky_piston {facing:up}
/fill x1 y1 z1 x2 y2 z2 sticky_piston {direction:up}
/fill x1 y1 z1 x2 y2 z2 sticky_piston direction:up
From what I've read, {direction:up} or perhaps {Direction:up} should be correct. What am I missing?
Block states should be in the format variable=value:
/fill x1 y1 z1 x2 y2 z2 sticky_piston facing=up
Block states are also still just an alternative to numeric data values. You can use data values if you wish:
/fill x1 y1 z1 x2 y2 z2 sticky_piston 1
From the curly brackets ({,}) and colon (:), it looks like you may be getting confused with NBT, which is separate from data values/block states.
The way that you would do this would be /fill x1 y1 z1 x2 y2 z2 sticky_piston[facing=up]. Curly brackets and colons aren't for NBT data these days. If you want to learn more about /fill, here is a video that might help you:
