Initial

data/custom_item_model_data/function/second.mcfunction

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+schedule function custom_item_model_data:second 1s
+
+execute as @a[scores={CustomModel=1}] if items entity @s weapon.mainhand * run function custom_item_model_data:trigger
+execute as @a[scores={CustomModel=2..}] if items entity @s weapon.mainhand * run function custom_item_model_data:remove_model
+
+# resets trigger
+execute as @a run function custom_item_model_data:enable