diff --git a/booking.install b/booking.install
index 3bf42e3..5623872 100644
--- a/booking.install
+++ b/booking.install
@@ -797,6 +797,7 @@ function booking_update_7254() {
 function booking_update_7255() {
 	$spec = array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'disp-width' => '10');
 	db_change_field('booking_variety_regn', 'booking_node_id', 'booking_person_nid', $spec);
+	_booking_node_create_mysqlview();
 }
 
 /**
diff --git a/booking.variety_form.inc b/booking.variety_form.inc
index 20ab5bc..e958002 100644
--- a/booking.variety_form.inc
+++ b/booking.variety_form.inc
@@ -127,7 +127,7 @@ function booking_variety_regn_form_validate($form, &$form_state) {
 
   // Don't run validation on ajax callback
   if (isset($form_state['input']['_triggering_element_name'])) {
-    watchdog('booking_debug', 'booking_variety_regn_form_validate: skipping due to ajax callback');
+    //watchdog('booking_debug', 'booking_variety_regn_form_validate: skipping due to ajax callback');
     return;
   }
 
@@ -162,7 +162,7 @@ function booking_variety_regn_form_validate($form, &$form_state) {
     array(':eid' => $event->eid));
   $sessions = $sessions_query->fetchAllAssoc('vid');
 
-  watchdog('booking_debug', 'booking_variety_regn_form_validate sessions query: <pre>@info</pre>', array('@info' => print_r( $sessions, true)));
+  //watchdog('booking_debug', 'booking_variety_regn_form_validate sessions query: <pre>@info</pre>', array('@info' => print_r( $sessions, true)));
 
   //check there is still room 
   foreach ($variety_timeslot_ids as $id) {
@@ -184,10 +184,7 @@ function booking_variety_regn_form_validate($form, &$form_state) {
       $form_state['flag'] = 1;      
       drupal_set_message('You have selected a session that is now full. Please try again.', 'error', FALSE);
     }
-
   }
-
-
 }
 
 /**
@@ -197,9 +194,42 @@ function booking_variety_regn_form_submit($form, &$form_state) {
 	global $event;
   $values = $form_state['input'];	
   watchdog('booking_debug', 'booking_variety_regn_form_submit: <pre>@info</pre>', array('@info' => print_r( $form_state, true)));
+  $booking_variety_ids = array();
 
-  //use an update query for the regncount field
-  //based on update booking_variety_sessions set booking_variety_regncount = booking_variety_regncount+1 where vid = 1;
 
-  //store the selected variety sessions as a json encoded array of IDs in field booking_variety_ids
+
+  //get a list of timeslot IDs from matching form values
+  $variety_timeslot_ids = preg_filter('/^select-variety-(\d+)/', '$1', array_keys( $values ));
+
+  //query the sessions table
+  $sessions_query = db_query("SELECT * FROM {booking_variety_sessions} WHERE booking_eventid = :eid", 
+    array(':eid' => $event->eid));
+  $sessions = $sessions_query->fetchAllAssoc('vid');
+
+  foreach ($variety_timeslot_ids as $id) {
+    $selected_session_id = $values['select-variety-' . $id];
+
+    // Don't try and check availablity for a select element that is still on the default value
+    if ($selected_session_id == 0) {
+      continue;
+    }
+
+    //use an update query for the regncount field
+    //idea from https://api.drupal.org/comment/19374#comment-19374
+    db_update('booking_variety_sessions')
+      ->expression('booking_variety_regncount', 'booking_variety_regncount + :count', array(':count' => 1))
+      ->condition('vid', $selected_session_id)
+      ->execute();    
+
+    //store the selected variety sessions in an array of IDs
+    $booking_variety_ids[] = $selected_session_id;
+  }
+
+  //perform the insert to the booking_variety_regn table
+  db_insert('booking_variety_regn')
+    ->fields(array(		
+      'booking_variety_ids' => implode(",", $booking_variety_ids),
+      'booking_person_nid' => $values['booking_nid'],
+    ))
+    ->execute();
 }
\ No newline at end of file