Thanks for your reply. But its not working. I will explain the current scenario. I have a listbox 'Quarter_Number' and button 'Quarter1'. When the button is clicked, the values 2,3, and 4 will be selected simultaneously. Only the value 1 will remain unselected. And when I click button1, I want to display only chart1. Hope you understood my problem.
just for your information I will give the expression used in chart1.