REST API: Execute Analytics Reports and Custom script

Summary:

Getting column data via API

Content (required):

Hello everyone,

I have this analytics report with some data. In one of the columns I am using custom script to extract specific value from Private Note. It works as expected, I am getting needed value. However, when I am calling this report from API, I get as a response the entire thread and not the replacement value. From one hand, I understand that the value of an actual column does not change, but custom scripts suppose to overwrite it. Did anyone encounter same problem? Would appreciate any direction or advise to overcome this.