Thanks Sanjoy
Its really what i was looking for. Thanks for your help. Now i have one road block and that is in some bars the text is showing after the bar (if there is space in Y axis) and in some bars the text is appearing inside the top of the bar (if there is not space in Y axis) can you please help me if i can fix the place where if there is not enough space at the top of the bar then the label automatically create some space to fix the text.
Thanks for your help.