on load:
    set {_json} to json from string "{'A': [1,2,3,4,{'B':false}]}"
    set json value "A[1]" of {_json} to true
   
    # Before {"A":[1,2,3,4,{"B":false}]}
   
    remove json value "A[4]:B" from {_json}
    add values 1,2,3,4 to {_json}
    send {_json}
   
    # After {"A":[1,2,3,4,{}]}

    load json file "try3.json" as "try"
    send cached json "try"
    set json value "A[0]" of cached json "try" to true
    send cached json "try"