THANKS TO ALL THOSE WHO VIEWED AND REPLIED TO MY PROBLEM ,,BUT THE PROBLEM IS STILL PARTIALLY SOLVED IF ANY1 CAN HELP ME WRITE A REGEX WHICH ALLOWS EVERYTHING EXCEPT <>@ CHARACTERS AND SHOULD ALSO NOT ALLOW ONLY WHITE SPACES
BORIS HELPED ME WITH THE REGEX-- validation-regex="^[^<>
@]+$" BUT IS ALLOWING WHITE SPACES..