// change all globals inside a transaction
    tstart
    set ^PersonD(id) = answers  // store the answers

    set $bit(^PersonI("Bitmap-ID", chunk), position) = 1
    tcommit
    write "...stored"    

    // ask if user wants to delete
    read !, "Delete? (y/n): ", yn
    if ((yn = "y") || (yn = "Y")) {
        do ..Delete(id, record)
        quit
    }

Class ObjectScript.Lookup3
{

/// delete chosen record (lock, start a txn, kill global nodes, commit txn, unlock)
ClassMethod Delete(id as %Integer, record as %String)
{
    // try to lock the record for 5 seconds
    lock +^PersonD(id):5
    if '$test {
        write "...someone else is editing this person. Try again later."
        quit
    }
    // retrieve data
    set $listbuild(name, phone, intdob) = record
    set last = $piece(name, ",", 1), first = $piece(name, ",", 2)
    set chunk = (id\64000) + 1, position = (id#64000) + 1
    
    // change all globals inside a transaction
    tstart
    kill ^PersonD(id)
    kill ^PersonI("Name", last, first, id)
    kill ^PersonI("Phone", phone)
    kill ^PersonI("DOB", intdob, id)
    set $bit(^PersonI("Bitmap-ID", chunk), position) = 0
    tcommit
    write "...deleted"
    lock -^PersonD(id)
}
}

    // ask if user wants to edit
    read !, "Edit? (y/n): ", yn
    if ((yn = "y") || (yn = "Y")) {
        do ..Edit(id, record)
        quit
    }

Class ObjectScript.Lookup3
{

/// edit chosen record (lock, reprompt, compare, update globals, unlock)
ClassMethod Edit(id as %Integer, record as %String)
{
    // try to lock the record for 5 seconds
    lock +^PersonD(id):5
    if '$test {
        write "...someone else is editing this person. Try again later."
        quit
    }
    // show current data and prompt for updates
    do ..Reprompt(record, .newanswers)
    // if changes were made, update the record
    if '$listsame(record, newanswers) {do ..Update(id, record, newanswers)}
    lock -^PersonD(id)
}
}

Class ObjectScript.Lookup3
{

/// prompt for updates - similar to ##class(ObjectScript.DataEntry4).Prompt()
ClassMethod Reprompt(currentdata as %String, ByRef newanswers as %String)
{   
    // get current name, phone, intdob so that they can be displayed within prompts
    set $listbuild(currentname, currentphone, currentintdob) = currentdata
    do {
        write !, "Name: ", currentname, " => "
        read newname
        // enter nothing to keep current value
        if (newname = "") {
            set newname = currentname
            quit
        }
     }
    while '##class(ObjectScript.DataEntry4).ValidName(newname)
    
    do {
        write !, "Phone: ", currentphone, " => "
        read "(617): ", newphone
        // enter nothing to keep current value
        if (newphone = "") {
            set newphone = currentphone
            quit
        }
    }
    while '##class(ObjectScript.DataEntry4).ValidPhone(.newphone)

    do {
        write !, "DOB: ", $zdate(currentintdob, 2), "=> "
        read newdob
        // enter nothing to keep current value
        if (newdob = "") {
            set newintdob = currentintdob
            quit
        }
    }
    while '##class(ObjectScript.DataEntry4).ValidDOB(newdob, .newintdob)

    set newanswers = $listbuild(newname, newphone, newintdob)
}
}

Class ObjectScript.Lookup3
{

/// save the updated record (start a txn, updating data and index globals using set and kill, commit txn)
ClassMethod Update(id as %Integer, currentdata as %String, ByRef newanswers as %String)
{
    read !, "Store updates? (y/n): ", yn  // ask if user wants to store
    // only go on if user says yes
    if ((yn '= "y") && (yn '= "Y")) {
        write "...not stored."
        quit
    }
    
    // get current and new data for comparisons
    set $listbuild(currentname, currentphone, currentintdob) = currentdata
    set currentlast = $piece(currentname, ",", 1), currentfirst = $piece(currentname, ",", 2)
    set $listbuild(newname, newphone, newintdob) = newanswers
    set newlast = $piece(newname, ",", 1), newfirst = $piece(newname, ",", 2)    

    // update all globals inside a transaction
    // only update indices if the data was changed    
    tstart
    set ^PersonD(id) = newanswers
    if (newname '= currentname) {
        // kill old name and add new name to index
        kill ^PersonI("Name", currentlast, currentfirst, id)
        set ^PersonI("Name", newlast, newfirst, id) = ""
    }
    if (newphone '= currentphone) {
        // kill old phone and add new phone to index
        kill ^PersonI("Phone", currentphone)
        set ^PersonI("Phone", newphone) = id
    }
    if (newintdob '= currentintdob) {
        // kill old dob and add new dob to index
        kill ^PersonI("DOB", currentintdob, id)
        set ^PersonI("DOB", newintdob, id) = ""
    }
    tcommit  // commit the transaction
    write "...updated."    
}
}