Show values (both zero and non zero values) based on selection

[VaishnaviMogal2]

Hi,

As shown in above image, there are two graphs, charge sessions by user expr and charge sessions by classification. I have to show both zero and non zero values and the values should get filtered based on selection made in table, eg if I select slow to start the both zero and non zero classification values belongs to slow to start only should display in classification. I have tried with sum({1}0) but this ignores selection for zero values. sum(0) is also not working. 

How can I achieve it?

Thanks.