Zoho Reply API issue

I want to reply from my appplication using zoho api name[reply] and pass fromaddress=" test@gmail.com" and toaddress=" support@sigmasolve.zohodesk.com" at that time giving below error..can you help me..?

This is my API :-

https://support.zoho.com/api/xml/cases/reply?

authtoken=c363303f08f1c7c28d098df319817a1e&portal=sigmasolve&department=sigmasolve&id=211163000000222003&

fromaddress= test@gmail.com&toaddress= support@sigmasolve.zohodesk.com&

content=sample22 test from nop&subject=testing2

This is my API reply:-

<?xml version="1.0" encoding="UTF-8" ?>

<error>

<message>Invalid From Address</message>

</error>

</response>

how to pass customer email in fromaddress parameter instead of support zoho address.?