[JS] Formating Text Overflow

Thank you a lot.

I understand what you are doing, but I cannot modify any other formatting but the perticular character's Kerning I am looking for. Also in case the user is exiting the program early, I cannot change the box size without being able to restore it. Also I am dealing with embedded textframes so I would be limited to the parent size as well.
So my goal is to address the space between 2 characters (I believe it would be an inserpoint) in overflow text. Maybe I am approaching it incorrectly.

Try something like this:

var myDoc = app.activeDocument;
resizeOversetContent();

function resizeOversetContent() {
var myStories = myDoc.stories;
var myName = myDoc.paragraphStyles.item("Para Style"); //you must have the content using a specific style so you can edit.
for (var j = myStories.length - 1; j >= 0; j--) {
while (myStories.overflows == true) {
if (myStories.appliedParagraphStyle == myName) {
myName.minimumGlyphScaling = myName.minimumGlyphScaling - 1;
myName.desiredGlyphScaling = myName.desiredGlyphScaling - 1;
myName.minimumWordSpacing = myName.minimumWordSpacing - 0.1;
myName.desiredWordSpacing = myName.desiredWordSpacing - 0.1;
myName.minimumLetterSpacing = myName.minimumLetterSpacing - 0.725;
myName.desiredLetterSpacing = myName.desiredLetterSpacing - 0.725;
}}}}

Let me know if this is what you're after.

Brett