Lucky Block

Hello someone knows how to make things fall out when you right-click on the block. 1. when I created the block, I added the function On block rightclicked, then clicked on "Stack event" (add event), Add item to inventory (thing any 1shtuku) (add event), clicked on (add event), (once again did the same), started minecraft took the block, when the right mouse button on the block clicked I was given things that I chose, can I somehow make 1 thing fall out or is it impossible?