Kibana search filter

How do I enter a regular expression in kibana filter.
I have a document which looks like
{ Name:User details, Status:failed, InstanceName:Windows volume maintenance tasks, Domain:TEST.COM }

Now I want to set a filter for the InstanceName so that I get only the InstanceName with "Windows" string.

I tried giving InstanceName: Windows as well as InstanceName: Windows* in the Search Field of Discovery in kibana but it doesn't work.
Kindly guide.

Thanks & Regards

In Lucene query syntax you don't need a space between field name and value. Try InstanceName:Windows*