Zephyr Scale - working with API and custom fields

Hi All,
I'm searching for a way to create a report that will show the last execution results by custom field.
I need by end of each day to show on jira dashboard a table with y = custom field  and x = status of executions

in my case:
the custom field is the build number and it's filled automatically on every nightly run.

thank you in advance,

Hadar