Place a caret before strikeout and copy contents

I managed to solve this by my own. For anyone in need of a starting point for such a script topic here's my solution:

/**
 * @description Convert all non-empty StrikeOut (cross-out) annotations into StrikeOutTextEdit (true replace) annotations for Adobe Acrobat
 *  Tobias Wantzen
 * .0
 */
try {
    this.syncAnnotScan();
    for (var nPage = 0; nPage < this.numPages; nPage++) {
        /* get all annotations on the page */
        var Annots = this.getAnnots({
            nPage: nPage
        });
        /* process each annotation */
        if (Annots != null) {
            for (var i = 0; i < Annots.length; i++) {
                if (Annots[i].type == "StrikeOut" && Annots[i].contents != "") {
                    /* get position of strikethrough annotation */
                    var AnnotsRect = Annots[i].rect;
                    /* create caret annotation */
                    var newAnnot = this.addAnnot({
                        page: nPage,
                        type: "Caret",
                        author: Annots[i].author,
                        intent: "Replace", 
                        refType: "R", 
                        rect: [ AnnotsRect[2], AnnotsRect[1], AnnotsRect[2] - 10, AnnotsRect[1] + 10 ],
                        richContents: Annots[i].richContents
                    });
                    /* group with strikethrough annotation */
                    Annots[i].richContents = "";
                    Annots[i].intent = "StrikeOutTextEdit";
                    Annots[i].inReplyTo = newAnnot.name;
                    Annots[i].refType = "Group";
                }
            }
        }
    }
} catch (e) {
    app.alert(e);
}

I'm not quite sure about the caret annotation's rect definition I found by try & error. Will this still work on very small or very big font sizes of the text in the PDF? I don't know ... If there is a better solution for positioning the caret annotation please let me know.

Thanks, Tobias