getSearchRecords and Quotes Module

getSearchRecords and Quotes Module

Hi! I'm trying to get JSON information from Quotes Module, but not all - only custom fields. For example:

https://crm.zoho.com/crm/private/json/Quotes/getSearchRecords?authtoken=TOKEN&selectColumns=Quotes(Description, Subject, Contact Name, Product Name, Quantity, List Price, Grand Total)&scope=crmapi&newFormat=2&searchCondition=(Valid Till|=|2012-10-05)

But result of this request is only field "Description". How can I get all info? Thx a lot!
Screenshot of results I got: