"<" symbol is given by user in the description.so i dont have control on wat values given by user.
Try to replace the < character by using the String replace function with <
Are you saying that you are being provided with an XML file which you need to compile and which has something like this inside it?
<sometag>a < b</sometag>
If that's the case, it isn't legitimate XML.
Or are you saying that at runtime the user enters "a < b" and you need to put this text into an XML node?
Adobe Flex SDK Team
we have solved the issue by forming the text (with "<" symbol) as xml node and appended it to main xml.
(Note : Native xml object automatically replace its node value "<" text with <)