Grafan templating regex


I am using grafana (4.6). In there I need to filterout the things that I not wanted in the templating section.
ex: I can use like this - Regex = /abc|xyz|/ from ( abc , xyz , pqr, 123)

But I need to avoid only xyz, So, If there any way to use not equal function and use all the things except ‘xyz’. How can I get this ? Please support to this.


Maybe something like this: