Application Migration Error

Question

Hi All
  I am going to migrate my code form flex 3 to flex 4. I uses mx.core.ITextInput in my code i am getting follwing errors:
  1061: Call to a possibly undefined method setSelection through a reference with static type mx.core:ITextInput.
1119: Access of possibly undefined property selectionBeginIndex through a reference with static type mx.core:ITextInput.
my code sinplet is
  textInput.setSelection(textInput.text.length, textInput.text.length);
textInput.selectionBeginIndex;
sorry i forgeeten imp thing my class is AutoCompleteModified that extends ComboBox
and get from
// Copyright (C) 2003-2006 Adobe Macromedia Software LLC and its licensors.
// All Rights Reserved. The following is Source Code and is subject to all
// restrictions on such code as contained in the End User License Agreement
// accompanying this product.
// Modified by Jens Krause [www.websector.de] to avoid issues using Flex 3
// @see: http://www.websector.de/blog/2008/04/30/quick-tip-avoid-issues-using-adobes-autocomplete-i nput-component-using-flex-3/
// This class is for demonstration purposes only.
// To use this solution extend the original Autocomplete.as described at the blog entry mentioned above, please.
Any help would be hieghly appriceated .
regards
gaurav kumar pandey

Answer 1

Hi Subah,
   What ever property Robin had suggested in the above thread is correct make sure you use the latest stable build of flex sdk 4 , I had solved the issue by using the flex sdk flex_sdk_4.0.0.14159 . Hope this will help you . Any further query or suggestion  are welcome.
Gaurav kumar Pandey