Get cursor to score from parts

// 1) identify our starting note/accidental
var element = curScore.selection.elements[0];
 
var accidental;
var note;
var part;
 
// -note-accidental-
if (element === undefined) {
    console.log("No selection");
    return;
} else if (element.type == Element.ACCIDENTAL) {
    accidental = element;
    note = element.parent;
} else if (element.type == Element.NOTE) {
    note = element;
    accidental = element.accidental;
} else {
    console.log("Fail to identify an accidental " + element.userName() + "/" + element.type);
    return;
}
 
// 2) identifying where is the selected element
// -segment-track-
var segment = note;
while (segment.type != Element.SEGMENT) {
    segment = segment.parent;
}
var tick = segment.tick;
var track = element.track;
 
// -"partScpre" excerpt-
var part = note.staff.part;
 
console.log("we are on " + tick + "/" + track + "/" + part.longName);
 
// 3) Identifying where to apply the change
var scores = [curScore];
for (var i = 0; i < curScore.excerpts.length; i++) {
    scores.push(curScore.excerpts[i].partScore);
}
 
// 4) Defining what to do
//var bracketSetting = accidental.accidentalBracket;
var bracketSetting = 2; //for testing since the cursor is in the same score right now
 
// 5) Applying the change
for (var i = 0; i < scores.length; i++) {
    console.log("~~~~ " + scores[i] + " ~~~~");
    var partscore = scores[i];
 
    // console.log("excerpts: "+partscore.excerpts.length+", tracks: "+partscore.ntracks);
 
    var cursor = partscore.newCursor();
    cursor.track = track;
    cursor.rewindToTick(tick);
 
    var cseg=cursor.segment;
    if (cseg===null) {
    console.log("nothing found at " + tick + "/" + track);
    continue;
    }
    var atSegment = cseg.elementAt(cursor.track);
 
    console.log("found at " + tick + "/" + track + ": " + (atSegment ? atSegment.userName() : "null") + " (" + cursor.segment.tick + ")");
    if (cursor.segment.tick !== tick) {
        console.log("Non matching tick");
        continue;
    }
    if (atSegment.type === Element.CHORD) {
        for (var j = 0; j < atSegment.notes.length; j++) {
            var note = atSegment.notes[j];
            console.log("note at pitch " + note.pitch + ":  " + note.accidentalType);
            if (note.accidental === undefined || note.accidentalType === 0)
                continue;
            note.accidental.accidentalBracket = bracketSetting;
 
        }
    }
 
}