custom field in jira automation

[Anton Sivolap]

I need to check if my cistom field "customfield_19700" is emply and than to add some slacg group to that field.

Can you help me with 1st operation to find that fild

and thaen how to write jql to fill this field with text

[John Funk]

Hi Anton - Welcome to the Atlassian Community!

Why not just use a regular Condition for Issue Fields Condition? Select your field in the drop down and use Is Empty for the condition. 

[Anton Sivolap]

I can`t see in drop this field. 

[John Funk]

What type of field is it?

[Anton Sivolap]

This is field when user make ticket, and I need to chek if he fill it

[John Funk]

Ah, it's a grouper picker type field, which Automation can't handle right now. 

In the Advanced Compare, change the condition to: does not match regular expression

Then in the regular expression field type:

(^null$|^$)

[Anton Sivolap]

ok. I understand first part. But now I need to write action To fill some text in this field - need to add some slack group to this field. I try 

"customfield_19700": "jira-promo user"

but didn`t work this sintaksis

[John Funk]

You are going to need the account ID of the user. Something like 

"customfield_19700": {{issue.Issue Watchers. accountId}}