# Check if item is a custom item
player.item_in_hand.is_ia_item
# Check if item is a custom block
player.item_in_hand.is_ia_block
# Get item namespaced id
player.item_in_hand.ia_namespaced_id
# Place a custom block.
# Syntax set_custom_block [<location>|...] [<namespaced_id>]
set_custom_block <context.location> ruby_block
# Check if block is a custom block
context.location.is_ia_block
# Get block namespaced id
context.location.ia_namespaced_id
my_world_script:type:worldevents:after player left clicks block:-narrate " "-if <player.item_in_hand.is_ia_block>:-narrate "Left click item is a custom block! <&6><player.item_in_hand.ia_namespaced_id>"-else:-narrate "Left click item is NOT a custom block! <&7><player.item_in_hand.material>"-narrate " "after player right clicks block:-if <player.is_sneaking>:-set_custom_block <context.location> ruby_block-else:-narrate " "-if <player.item_in_hand.is_ia_item>:-narrate "Right click item is a custom item! <&6><player.item_in_hand.ia_namespaced_id>"-else:-narrate "Right click item is NOT a custom item! <&7><player.item_in_hand.material>"-if <context.location.is_ia_block>:-narrate "Interacted block is a custom block! <&6><context.location.ia_namespaced_id>"-else:-narrate "Interacted block is NOT a custom block!"-narrate " "