Here's what I want my block to do, hopefull via some stacked event:
1. WHEN right-clicked with Item (X),
2. IF the block is empty (and it has only one inventory slot, which hold a stack of one item at most)
3. THEN item (x) leaves your hand
4. AND and a different item (Y) appears in the inventory of the block (and you break the block to get it out).
I can get it to do 1, 2, and either 3 or 4... But not 1, 2, and both 3 and 4. I suspect I'm plugging the event stack wrong or something? Is there a tutorial for this one, or some notes on this that may be of value?