Yes, this is possible with an automatic artifact playbook. The run conditions would be, IF Artifact is created AND Type is equal to System Name. This would then run a local script that would have the following code,
incident.properties.hostname = artifact.value. Then the end point after the script. This playbook would run when an artifact of the type, System Name, is created and it would then set the Incident field, Hostname, to the value of that artifact. I can write up an example playbook and export it and upload it here if you would like.
------------------------------
Richard Swierk
------------------------------