I would like to know how do I use the regex in jmeter to capture tokens.

Below this the regex I have created
[![enter image description here](https://i.stack.imgur.com/B3b8k.png)](https://i.stack.imgur.com/B3b8k.png)

And I have pass the values
[![enter image description here](https://i.stack.imgur.com/Uie6b.png)](https://i.stack.imgur.com/Uie6b.png)

And this is the end results
[![enter image description here](https://i.stack.imgur.com/k9Jp9.png)](https://i.stack.imgur.com/k9Jp9.png)

I'm suppose to get something like this admin:1448270860004:8b54935ad909437ed271f93c4487cdda. How do I do it?