Please help using javascript code pull already created field in jira

Good afternoon Please help
using javascript code pull already created field in jira. It’s not in the field settings, so I can’t load it.
I need to load the Period of execution field in eazyBi in order to generate a report.

Hi @jon33367

Could you please elaborate a bit more?
What is the code that you are using in the Advanced settings to pull the data from this custom field?

Here is the documentation page on Advanced settings for custom fields: Advanced settings for custom fields
And here you can check out different examples of Javascript code for calculated custom fields: JavaScript calculated custom fields

Looking forward to helping you out!
Best regards,
Nauris / eazyBI support

Good afternoon!
I already figured out this problem, Can you help me on this issue?
Grouping by values in a field - Questions & Answers - eazyBI Community

I have not been able to solve this problem for many many days