World Border Warning Time (Expression) — Skript
Addon: Skript · Category: Expression
Syntax
[the] [world border] warning time of %worldborders/instances%Description
How long the warning indicator is shown for when a world border is closing in. Minecraft stores this as whole seconds, so anything smaller is rounded down. Resetting it restores the value the default world border uses.
Examples
set warning time of world border of {_instance} to 10 seconds
add 5 seconds to warning time of {_instance}'s world border