diff --git a/booking.variety_form.inc b/booking.variety_form.inc
index 1021936..4388e32 100644
--- a/booking.variety_form.inc
+++ b/booking.variety_form.inc
@@ -128,6 +128,8 @@ function booking_variety_session_callback($form, &$form_state) {
   //for each entry in the variety timeslot table, create a new form select item
   foreach($result as $timeslot) {
     $fieldname = 'select-variety-' . $timeslot->tid;
+    watchdog('booking_debug', 'Timeslot @tid form state value:<br /><pre>@info</pre>', 
+      array('@tid' => $timeslot->tid, '@info' => print_r($form_state['values'][$fieldname], true)));
 
     //re-create the form element for this timeslot
     $form['variety-sessions'][$fieldname] = array(