Copy a summary from advanced link custom field to another custom field

[Jagoda Zawadzka]

Hello everyone!

I need help with Automation rules.

I have two custom fields:

1. Company = customfield_10109 / it's a 3rd party custom field that allows me to link issues to issues

2. Company name = customfield_10099 / regular custom text field

I am building automation within 2 projects (if I create an issue in one project, it should be duplicated in the second project). 

The 'Company field' will be populated manually within the 1st project (= linked to other issue) and it should then copy data to the issue in the 2nd project but as the field is fom a 3rd party, I have no option to copy it within projects.

My idea was to create a 'Company name' text field and copy the summary from the Company link field to be displayed into the Company name field (all within the 1st project). I could then copy the text field data to the 2nd project.

However, I got stuck.

I managed to built an easy automate:

{
"fields": {
"Company name": "{{customfield_10109}}"
}
}

but the displayed data looks like this:

{issues=[{label=CMDB-21 Self-Issuer test, value=CMDB-21}]}

(where only the "Self-Issues test" is a summary)

I have no idea how to extract the summary only.

Are you able to help me anyhow?

Thank you in advance,

Jagoda