Hi Experts How to check , The worker already assigned for the particular task with some x leader for the particular date , Here am having the Date(textfield) , Leader name(drop down), Worker name's(Multiple List box), or is there any module for that ? for example x,y,z are the leader, a,b,c are the workers assume a is assigned to x on 15-march-2009 if admin again try to assign the 'a' worker to y leader for the task , on 15-march-2009 , Then need to raise the validation error Like the a is already assigned,please choose another worker , any grate idea -- உங்கள் நண்பன் பரணி குமார் Regards B.S.Bharanikumar POST YOUR OPINION http://bharanikumariyer.hyperphp.com/ http://bharanikumariyerphp.site88.net/