How to use PayPal HTML variable

Hi,
I don't know how off topic Dreamweaver Discussion allows me to get, but I am not getting much notice on the PayPal fourm. How do you use the variables they describe here:
https://cms.paypal.com/us/cgi-bin/?cmd=_render-content&content_ID=developer/e_howto_html_A ppx_websitestandard_htmlvariables
"<input type="hidden" name="tax" value="3.00">" does not seem to work (it uses my Buy Now button's tax rate).

Hi Karen,
I didn't think it would matter if I posted code as it's just the default Buy Now button code. But it does point out the fact that it's a Buy Now button rather than a Add to Cart button. I wonder if that makes a difference.
<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="hosted_button_id" value="secretvalue">
<input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_buynowCC_LG.gif" border="0" name="submit" alt="Buy Now">
<img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>
To this I added the
<input type="hidden" name="tax" value="3.00">
both above existing hidden values and below those two lines (in different tests).
Yes I do have a Default Tax set in my profile, but for this button I'm using a stipulated % tax during the button creation (there are two radio button options, one for the default and one for me to set one).
Thanks for the help. On PayPal.com I've had 6 views for the post.

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Message was edited by:
moonsoft

Hi Moonsoft,
I have already answered this query in the other post at Re: how to link more than one links in portlet?(jsp develop)
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