Is it possible to create chests into world by plugin?
I'm can't find how to do it.
Use cWorld:SetBlock(BlockX, BlockY, BlockZ, E_BLOCK_CHEST, Meta). Then you can use cWorld:DoWithChestAt(BlockX, BlockY, BlockZ, CallbackFunction) to change it's contents if wanted.
What doesn't work, setting the chest block, or filling it with the callback?
I believe the minimum blockmeta for chests is 2. Try setting it to that.
Check that you use for chest the meta value of 2 to 5. A meta value of 0 makes the chest invisible.
I spent 18 hours in order to somehow solve the problem. A decision was so close

(((
Thank you very much, NiLSPACE and Seadragon91.