Vanilla Minecraft - Detect various /trigger outputs

On multiplayer in Minecraft, I am trying to detect when a player changes their score using /trigger. Here's an example scenario:
I create a new objective called "test." Then, I use /scoreboard players enable @a test
, which lets everyone modify the objective.
After which, I have a /tellraw command used on all players giving them four options to click. Each option corresponds to a different score the player gives themselves. For example, clicking on "test one" would make the player run /trigger test set 1
, clicking on "test two" would make them run /trigger test set 2
, and so on.
How would I be able to detect when a player set their objective to a specific number score, such as 3?
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How do you detect what a player is looking at in Minecraft?
You can use the /trigger command to create a trigger that sets or adds values to scoreboard objectives that trigger enabled in Minecraft....DefinitionsHow do you enable triggers in Minecraft?
You can't directly disable scoreboard triggers, but you can instead trick Minecraft into thinking that the player used /trigger , using /execute . This command will disable the trigger of the nearest player.How do you disable triggers in Minecraft?
What do you mean by trigger spawn? /trigger is a command non-OP players can use (often with click-action bits of text) that increase their score. Illustration: /trigger <score> will increase the score <score> of the entity executing the command by one.Creative Flight and Teleportation Pads in Vanilla Survival! | Origin Realms Guide
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