Selection callback not working

[amitmadahar]

Hi Will,

I am looking solve the exact problem that you have resolved in your demo. I am using streamlit-1.27.2-py2.py3-none-any.whl and able to run your first sample code. However the callback to output the selection is not working for some reason. I do not get any warning or error message so not sure what is issue is. Would you be able to help? I am looking for the exact solution you demo.

Thanks
Amit