Grafana remove zero value series

I have 3 drop down in my dashboard based on region & 3 accounts in AWS.

  • I have defined 3 variables based on 3 accounts
  • I have written 3 queries for 3 accounts in dashboard panel

Problem statement:
So when I am selecting 1 account in drop down, its still showing the empty series for other 2 accounts. How can I resolve this issue?
Also how to ignore any empty value in a particular dimension of panel