Simple Skript not working?

[Narratrr]

this aint work, any help?

on rightclick on chest:
    if block under event-block is bedrock:
        wait 10 ticks
        set metadata tag "chest" of player to chest inventory with 3 rows named "&7Chestw"
        set slot 0 of metadata tag "chest" of player to dirt
        open (metadata tag "chest" of player) to player

[Wyndexx]

on right click on chest:
    if block under event-block is bedrock:
        wait 10 ticks
        set {_chest} to a new chest inventory with 6 row named "&7Chestw"
        set slot 0 of {_chest} to dirt
        open {_chest} to player

Above is the code I would use (not tested). 

It uses Skript's built-in gui creator.