field validation in dialog programming

hi,

any can help me.

in screen i am having one field i.e numat.

for this validation required.

i used error msg type.

if u fill this field with any number or words and press enter its is showing error msg but field goning is disable.

how to clear that field automatically after clicking the enter.

Edited by: prs on Jan 31, 2008 5:45 PM