Hi to All
First of all Jamie and Ben many thanks and my congratulations for this new effort!
Now going to my question. I am using the WPUF Pro plugin and have followed your instructions on how to Use the Front End for New Product Submissions. Everything OK.
Because I had many product categories I wanted to have the product category pre-selected and give it as a url parameter to the form I have created and then use the code below to pass the variable. I have used the code Jamie provided on Matt Gates Plugin but instead of using $_POST I have used $_GET. I was able to pass the product category using a hidden field but what I wanted was to pass it through the URL Parameter. I am using a jquey script that is Dynamicaly Cascading Dependent Drop Down and dropdown redirect http://www.jqueryscript.net/demo/Dynamic-jQuery-Cascading-Dropdown-Lists-Plugin/.

I do not want to create hundred of forms, one for each product category. So I wanted to pass the product category as an input.
Below is the script I used(I have changed the $_POST into $_GET and have added a url parameter ‘product_categories’

function wpuf_update_hidden_categories($post_id) {
// $cats = $_POST[‘product_categories’];
$cats = $_GET[‘product_categories’];
$categories = array_map(‘intval’, explode (‘,’, $cats));
wp_set_object_terms( $post_id, $categories, ‘product_cat’);
// Optional to clean up the database (deletes the hidden field data after converting it into object terms)
delete_post_meta( $post_id, ‘product_categories’, $_POST[‘product_categories’] );
} add_action( ‘wpuf_add_post_after_insert’, ‘wpuf_update_hidden_categories’ );
add_action( ‘wpuf_edit_post_after_update’, ‘wpuf_update_hidden_categories’ );

Is not working though. Any suggestions?