Go URL && SQL through POST-method

Question

Hello!
To create reports, I use asynchronous queries like this (GET-method):
saw.dll?Go&SQL=select+Region,Dollars+from+SupplierSales&format=xml
But sometimes there are queries for which the length of the URL is too long. In this case I want to use the POST-method.
For this I tried to use the following code:
<form action="http://bi-server/analytics/saw.dll?Go" method="post">
<input type="hidden" name="SQL" value="select+Region,Dollars+from+SupplierSales" />
<input type="hidden" name="Format" value="XML" />
<input type="submit" value="post it" />
</form>
but in response I receive an error:
Invalid Select Argument.
Any idea how to achieve this?
Thanks.

Answer 1

This works:
<FORM METHOD="post" ACTION="http://localhost:9704/analytics/saw.dll?" ENCTYPE="application/x-www-form-urlencoded">
<input type=hidden name=Cmd value=Answers>
<input type=hidden name=nqUser value=Administrator>
<input type=hidden name=nqPassword value=Administrator>
<input type=submit value="Answers">
</FORM>