[JS] CS6-> How to insert character at first location in text style range

Hi

I have a string of text which has an anchored text frame at the first character location in a Text Style Range.

The way I normally update text is to insert text around any anchors, and that works, but I can't seem to get it to work if the anchor is located at the first character.

Example, where [a] is the location of the anchored object (the special character):

[a]My text

new text:

Pretext[a]My updated text

If this is impossible, then is it possible to move the anchor?

Any ideas? Thanks