Loop Blocks Issue

[jackass]

Hello. This skript is meant to set the block below any lapiz block in a 3 radius to sand, but the skript seems to set the block below 1 to sand, wait a second, then move on to the next block in the radius. The issue is I need the block below all lapiz blocks to turn to sand at the same time, not separate.

on place:
    if name of held item is "&7Sand Bot":
        if event-block is a chest:
            loop blocks in radius 3 around the event-block:
                if loop-blocks is lapis_lazuli_block:
                    loop 10 times:
                        set block below loop-blocks to sand
                        wait 1 second

 

[IDuckz_]

Try this:

on place:
    if name of held item is "&7Sand Bot":
        if event-block is a chest:
            loop blocks in radius 3 around the event-block:
                if loop-blocks is lapis_lazuli_block:
                    loop 10 times:
                        set block below loop-blocks to sand

If it didn't work, send me the errors.