I'm using the API to get a "Stage History related to a Potential" as indicated in the link below:

To fetch the Stage History related to a Potential

https://www.zoho.com/crm/help/api/getrelatedrecords.html

But the method don't return de Field "Modified By", the only fields returned are:

Amount

Stage

Probability

Expected Revenue

Close Date

Last Modified Time 

But, I can use that field in Zoho Report (is available)  and extract the report manually.

How I can Get That Field through Zoho API ?

Thanks