Multi Select /Deselect without CRTL in QV Bar chart

[#1]

Hi All,

I am in need to select multiple field values without CTRL key on QV Bar chart.  I'm able to achieve this by creating  couple of variables and Select in Field Action. However , the challenge is if user clicks the selected bar again , it should deselect. I could achieve it when user clicks the selected bar 2 times but i want this to happen on single click only. Could someone help me if i am doing something wrong with my code or there is much cleaner approach to achieve this functionality.

To summarize the problem -

1) User should be able to select multiple bar without holding a Ctrl Key.

2) To deselect the selected bar user should not click it 2 times.

Attached is the application for you information.

Thanks

Manish