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This feature is exclusive to Java Edition. 

Modifies a scoreboard objective with a "trigger" criterion. Allows non-operator players to modify their own scoreboard objectives under tightly controlled conditions. Often used to let players activate systems controlled by data packs or command blocks.


trigger <objective>

Adds 1 to the current value of <objective>.

trigger <objective> add <value>

Adds <value> to the current value of <objective>.

trigger <objective> set <value>

Sets the value of <objective> to <value>.


<objective>: objective

An enabled scoreboard objective with the "trigger" criterion.
It must be an valid scoreboard objective name.

<value>: integer

Specifies the value to be set to or added to the objective.
Must be a 32-bit integer number.


CommandTriggerJava Edition
anythe arguments are not specified correctly Unparseable
the objective does not exist Failed
the objective isn't the "trigger" type
the executor is not a player
the executor isn't on the scoreboard objective.
the objective has not been "enabled" for the player
On successChanges the value of the objective and the objective is un-enabled for the player.


CommandEditionSituationSuccess Count/execute store success .../execute store result ...
anyJava EditionOn fail000
On success11The objective's score of the player after the command is executed.


Java Edition
1.814w06aAdded /trigger.