I had the issue of not being able to load and view the icons on the draw toolbar. If that is your problem, you need to have a src/assets folder in your flex project with the icon images inside it. Here is the help I got: http://forums.arcgis.com/threads/50923-Icons-for-quot-select-parcels-quot
I don't see anywhere in your code that you are declaring the cmbStyle combobox or dropdownlist. I also don't see where you are using your strPointStyledp and other arraylists.