Fill custom field with text from comment

Question

Hello,

I am looking for a way to fill a custom field with input/text from a specific comment. For example:

Jira service request is submitted via portal or e-mail. Comment includes the string "Service ID: T10000". I would like to parse "Service ID: T10000" into a custom field called "ServiceID"

unknown · Answer

unknown · Answer

yes, it would be a comment after the issue is created. basically:

issue created.

issue is commented (not a description) with string "Service Case: SN1x******". We'd then parse that string into a custom field.

Kristján Geir Mathiesen · Answer

Hi @[deleted] and...

You could probably use (Atlassian) Automation to do this: 
Trigger is on "Issue created". 
Condition is "Issue Fields Condition"
Update your custom field with that value.

HTH,
KGM