- define list li@
        - define list2 li@
        - foreach <context.inventory.list_contents.full> {
          - if <def[value].material.name> != firework_charge {
            - define list <def[list].include[%value%]>
            } else {
            - define list2 <def[list2].include[%value%]>
            }
          }
        - flag player kept_items:%list2%
        - determine %list%