This works great. I posted a sample file and arulsettu posted it back with the required functionality.
So now I have what i need. But there are 2 issues:
1. On opening the app after closing qliksense, the values are invisible and a selection needs to be made for it to reappear.
2.It defaults back to a selection in the select list box when we come back to edit mode. For Eg: here value 1 is population (in attached file) and the select box defaults back to it , while chart still remains in previous selection that has been made in presentation mode.
Attaching the file that had posted with the solution for the previous thread. Please check sheet2.