Smart Values and Regex not working as expected

Question

Scenario
Email comes in to Service desk, raised a ticket, new ticket triggers automation to run.
Pretty standard scenario so far

Field 1: Jon Doe
Field 2: 123456789
Field 3: Some other text here
Date 1: 26 September 2025

Expected output will go relevant fields (but for simplicity dumping it in to a comment to help debug)

Comment results:

Field 1: *: Jon Doe <- Not expecting the *:
Split 1 of Field 1: *: <- Not Expected
Regex: {{issue.description.match(".Field 1:*(.*)").Split(" ")}} 
What I would expect to work is below but for some reason does not work, unless I include a * after the :

- {{issue.description.match(".Field 1: (.*)").Split(" ").get(0)}} 
- {{issue.description.match(".ield 1:.(.*)").Split(" ").get(0)}}

I'm pretty sure the 2 examples above should work, especially as it works for Field 3

End Split of Field 1: Doe

Works fine in the comments, but adding it to a custom field suddenly makes it Doe{Color}

where did this {Color} come from? 
Regex: {{issue.description.match(".ield 1:.(.*)").Split(" ").getFromEnd(0)}}

I'm having a similar issue with Field 2

Field 2 output: *: 123456789

REGEX: {{issue.description.match(".Field 2:*(.*)")
Again i would expect {{issue.description.match(".Field 1:(.*)") or {{issue.description.match(".Field 2:.(.*)") to work but it just doesn't output anything.

Field 3 works perfectly for some reason
REGEX: {{issue.description.match("Field 3:.(.*)")}}
Outputs exactly what I expect

Date 1 also works perfectly and enters correctly in to a date field.
{{issue.description.match(".ate 1:.(.*)").toDate("dd MMM yyyy").format("yyyy-MM-dd")}}

Where am i going wrong?

I've tried various forms of regex that i know works else where, but i'm not getting result in jira or inconsistent results.

I've dumbed down the regex alot from what I initially wanted to use to just using greedy matching using the * options.

I have also checked for hidden characters and the email body itself is clean too, no hidden characters that could mess with the Regex.

Input: 
Field 1: Jon Doe
Field 2: 123456789
Field 3: Some other text here
Date 1: 26 September 2025

expected Output:
First Name: Jon
Last Name: Doe
Report ID: 123456789
Report name: Some other text here
Report Date: 2025-09-26

Bill Sheboy · Answer

That may be due to the markup in the field (if it indeed does have bolded text) because it would be more than one single character.  Using {{issue.description.text}} before any parsing can help remove markup.

I recommend writing the {{issue.description}} to the log as that will help confirm what is in there, and speed along getting an expression to parse it.

Robbin_94rp5n · Answer

Thanks, was folling the documents that status you needed to use Match, hence using that.
Will try using split and see if that makes things easier for me.

From what i can see my regex is quite simple, i'm mainly concrned as the random inclusion of {color} and the *: for field one.

Note that ".Field 1:.(.*)" should generate the result but it doesn't until i write it as ".Field 1:*(.*)"

Robbin_94rp5n · Answer

I understand, the problem i'm having is that REGEX ".Field 1:.(.*)" should work but doesn't, but does work using the "Greedy" Wilcard, but then adds the *:  note that * is not part of the original string so it has added this.