i did get it working by hardcoding the product values into the salesforce.php file
look for the line:
} else if ($input['type'] == 'hidden') {
and replace the clause with
if ($id === 'Product_Link__c') { $content .= "\t".'<input value="'. 'http://' . $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"] .'" id="sf_'.$id.'" class="w2linput hidden" name="'.$id.'" type="hidden"/><br/>'."\n\n";
} else {
$content .= "\t\n\t".'<input type="hidden" id="sf_'.$id.'" class="w2linput hidden" name="'.$id.'" value="'.$val.'">'."\n\n";
}
}
i guess if i was to take a different approach:
in the form editor, can i set the “value” column to a php string or a get/post variable?