How can I call a function with parameters with a link?

I would like when you klik on a hyper link that the page is reloaded and that a function is called.
In this function I want to store some parameters in the database.
the function is called zen_set_test($x, $y);
I made the following code but it is not working.

<?php
$x = 'Test I';
echo zen_draw_form(' ', zen_href_link(FILENAME_PAGE_2, 'zen_set_test($x, $y)', 'SSL'),
'post', ' ') . zen_draw_hidden_field('action', 'process');
?>

End at the end of the file I put:
echo zen_image_submit(BUTTON_IMAGE_SUBMIT, BUTTON_SUBMIT_ALT);

Hopefully there is some one who can help me out.

Best regards, Robert