Help with block placing skript

[hx7e]

Hi there! I am trying to make a Skript for my mini game which allows players to place obsidian that will be removed after 40 seconds. However, I do not want players to be able to destroy the map by placing obsidian in water sources, grass, flowers, etc. I ONLY want the player to be able to place the obsidian if the block where it will be placed is an air block. This is what I have so far, but it doesn't work.

EDIT: To clarify the problem, the current issue is that I am not able to place obsidian anywhere on the map.

on place:
    if player's tool is obsidian:
        if block at event-location is air:
            wait 40 seconds
            set block at event-location to air
            stop
        else:
            cancel event
    else:  
        cancel event

 

[Goose]

Hi there! I am trying to make a Skript for my mini game which allows players to place obsidian that will be removed after 40 seconds. However, I do not want players to be able to destroy the map by placing obsidian in water sources, grass, flowers, etc. I ONLY want the player to be able to place the obsidian if the block where it will be placed is an air block. This is what I have so far, but it doesn't work.

EDIT: To clarify the problem, the current issue is that I am not able to place obsidian anywhere on the map.

on place:
    if player's tool is obsidian:
        if block at event-location is air:
            wait 40 seconds
            set block at event-location to air
            stop
        else:
            cancel event
    else: 
        cancel event

Is the place worldguarded?

 

[hx7e]

Is the place worldguarded?

no, this is the only thing which stops players from placing blocks

 

[Goose]

try this

on place of obsidian:
    if past event-block is air:
        cancel event
        wait 40 seconds
        set event-block to obsidian
        stop trigger
    else:
        cancel event

 

[hx7e]

try this

on place of obsidian:
    if past event-block is air:
        cancel event
        wait 40 seconds
        set event-block to obsidian
        stop trigger
    else:
        cancel event

thanks, unfortunately this didn't work either. I think the issue may be that event-block and event-location refer to the block the player is targeting before they place?