I'm almost new on Zoho CRM so maybe i'm not so practical, but I hope you could help me. 

i'd need to Mass Update some Records in Contacts, but when I arrive to the box "Select Field to Update" the field I need is not in the list. 

Is it possible to add other specific fields to this list?

 I've an Italian version of Zoho, so i've problems explaining the correct name of the field i'd need (my "Relazione Commerciale"), I think in english could be called Commercial Relation, and it's a research field that digs in the Contacts.

Could someone help me?

Thank you

Daniela