Change font size for a bookmark in word

Feb 11, 2014 at 9:48 PM
I am trying to change the font size, of the text for a bookmark, but can not get it work, just wondering if someone has any ideas on where I am going wrong.

The following are 2 methods I have for dealing with bookmarks. The first replaces the bookmark with the required value, and the second is what I was hoping would change the size
        public static void ReplaceText(string Bookmark, string NewText)
        {
            if (newDocument.Bookmarks.Exists(Bookmark))
            {                
                newDocument.Bookmarks[Bookmark].Range.Text = NewText;
            }
        }
        public static void ChangeFontSize(string Bookmark, float font_size)
        {
            if (newDocument.Bookmarks.Exists(Bookmark))
            {                
                newDocument.Bookmarks[Bookmark].Range.Font.Size = font_size;
            }
         }
When I execute the ChangeFontSize method the new size is NOT set.

If someone has an answer it would be appreciated

Thanks

Dave