I can able to get the "set-cookie" data by regular expression extractor/ by setting it in the JMeter user properties file but I can't get the following cookie data to use it in the "Request Header" as like defining user-agent.

**Cookie info displayed in the browser as follows:** 

```
connection keep-alive  
User-Agent xxxxxx   
Cookie _ga=GA1.2.1710658689.1468689932 

```

1. Where do I find the "`_ga`" Value such that I will use it.
2. What is the regular expression for it.

Kindly help me it is blocking.