inserting characters in footnotes, in Indesign

Question

when i select some text then run the code below, i can replace the two characters right before and after that selected text, but this code doesn't work if i select the text in footnotes.. how can i make it work there also?

var myStory = app.selection[0].parentStory;
var myIndex = app.selection[0].index;
var myInS = app.selection[0].insertionPoints[0].index;

var toplam = app.selection[0].characters.length
var toplama = app.selection[0].insertionPoints.length;

var myText1 = myStory.characters[myIndex-1];
var myText2 = myStory.characters[myIndex+toplam+0];

myText1.contents = "\uFD3F";  
myText2.contents = "\uFD3E";  

Answer 1

Do it using straight way:

    app.selection[0].insertionPoints[-1].contents = "\uFD3E";
    app.selection[0].insertionPoints[0].contents = "\uFD3F";

In case of replacing:

    var 
    myParent = app.selection[0].parent,
    char1 = myParent.characters[app.selection[0].characters[0].index - 1],
    char2 = myParent.characters[app.selection[0].characters[-1].index + 1];

    char2.contents = "\uFD3E";
    char1.contents = "\uFD3F";

It assumes selection is somewhere inbetween any characters (and is not just an insertionPoint...)

Jarek