Issue was with stock name being selected....dropdown .
As attachment, if stock name is selected via dropdown...Thing works fine ...
[b:89p3efuu]
Issue is : Stock name is not a dropdown, its a input field. This dropdown appears only after something is entered in the field[Prompting]...
Now i tried seleccting from this dropdown.. its not working sir...[/b:89p3efuu]
Refer snapshot ,code