Code for opening a ticket in the same browser tab

Hi,

I'm developing an app and I was wondering how to open the other tickets in the same browser tab and open a new tab in Zendesk.
 

Now I have linked to the other tickets in the interaction history, but when the user clicks on the links to the tickets, it opens in a new browser tab.

Like this:
 

I want it to open like this:

Whats the code for this?
 

Thanks for help in advance!