Zoho Reports API Questions

* Is it possible to update data? ie: If the row I want to update has a value of 10 and I want to add X to it can I do that?

https://zohoreportsapi.wiki.zoho.com/Updating-Data.html

* Data Sent as POST parameters.

In the samples the samples are written like this with the comment data sent as POST parameters. Because my webforms already post to a webpage, I was hoping to use ajax to post data to zoho and pass the data via the querystring. Can I do this?

http://reportsapi.zoho.com/api/demouser/EmployeeDB/EmployeeDetails ? ZOHO_ACTION =UPDATE
&ZOHO_OUTPUT_FORMAT=XML&ZOHO_ERROR_FORMAT=XML
&ZOHO_API_KEY=hewfdrbgs&ticket=gsssds&ZOHO_API_VERSION =1.0

Data Sent as POST parameters.
Salary=10000&Deduction=&Perks=6000&ZOHO_CRITERIA=("Department"='Finance')

* What does this response mean?

8504 The parameter ZOHO_API_VERSION is not proper(Has not been sent or is less than required count)

This query string is the one I am using:

http://reportsapi.zoho.com/api/accountname/dbname/tablename?ZOHO_ACTION=ADDROW&ZOHO_OUTPUT_FORMAT=XML&ZOHO_ERROR_FORMAT=XML&ZOHO_API_KEY=zzz&ticket=xxx&ZOHO_API_VERSION =1.0&Email=Gary