Your question is not clear about what you are asking for, but I will try to guess what you mean.
You want a read-only line of text in JIRA - if you really do mean a field with variable content, then you have two options.
In both cases you are going to have to think about how to get data into them, and you must remember that they will not appear on edit screens, only view (and searches and reporting etc)
The other thing you might be looking for is some form of static text on create or edit screens. To do this, install the JIRA Toolkit add-on and use a "message field"
Atlassian Summit is an excellent opportunity for in-person support, training, and networking.Learn more
Hello! I'm Rayen, a product manager at Atlassian. My team and I are working hard to improve the trial experience for Jira Software Cloud. We are interested in talking to 20 people planning t...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs