Hi,
If you want to pass some parameter in the POST data ; you will need to create an HTML form.
Please note that it is not really related to HikaShop or HikaMarket.
<form method="post" action="/my-url">
<input type="hidden" name="parameter-name" value="parameter-value/>
<input type="submit"/>
</form>
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.