diff --git a/languages/en.lang b/languages/en.lang
index 4ff4b7d..ee0d866 100644
--- a/languages/en.lang
+++ b/languages/en.lang
@@ -2,6 +2,7 @@ locale				= en_NZ
 page_og_desc		= Keep contact with François when he is off hiking
 error_commit_db		= Issue committing to DB
 unknown_field       = Field "$0" is unknown
+impossible_value	= Value "$0" is not possible for field "$1" 
 
 nav_back			= Back
 
diff --git a/languages/es.lang b/languages/es.lang
index 7f0b51a..0351078 100644
--- a/languages/es.lang
+++ b/languages/es.lang
@@ -2,6 +2,7 @@ locale				= es_ES
 page_og_desc		= Mantente en contacto con François durante sus aventuras a la montaña
 error_commit_db		= Error SQL
 unknown_field       = Campo "$0" desconocido
+impossible_value	= Valor "$0" no es posible para campo "$1" 
 
 nav_back			= Atrás
 
diff --git a/languages/fr.lang b/languages/fr.lang
index 8b44a6f..1aab245 100644
--- a/languages/fr.lang
+++ b/languages/fr.lang
@@ -2,6 +2,7 @@ locale				= fr_CH
 page_og_desc		= Gardez le contact avec François lorsqu'il part sur les chemins
 error_commit_db		= Error lors de la requête SQL
 unknown_field       = Champ "$0" inconnu
+impossible_value	= La valeur "$0" n'est pas possible pour le champ "$1" 
 
 nav_back			= Retour
 
diff --git a/lib/Spot.php b/lib/Spot.php
index d0c2b26..46c259f 100755
--- a/lib/Spot.php
+++ b/lib/Spot.php
@@ -28,6 +28,8 @@ use \Settings;
  * - Posts (table `posts`):
  *	 - site_time: timestamp in Site Time
  *   - timezone: Local Timezone
+ * - Users (table `users`):
+ *   - timezone: Site Timezone (stored user's timezone for emails)
  */
 
 class Spot extends Main
@@ -176,7 +178,6 @@ class Spot extends Main
 				'user'						=> $this->oUser->getUserInfo()
 			),
 			'consts' => array(
-				'server'					=> $this->asContext['serv_name'],
 				'modes'						=> Project::MODES,
 				'clearances'				=> User::CLEARANCES,
 				'default_timezone'			=> Settings::TIMEZONE
@@ -654,6 +655,8 @@ class Spot extends Main
 		$sDesc = '';
 		$asResult = array();
 
+		if($this->oDb->isId($sField) && $sValue <= 0) return self::getJsonResult(false, $this->oLang->getTranslation('impossible_value', [$sValue, $sField]));
+
 		switch($sType) {
 			case 'project':
 				$oProject = new Project($this->oDb, $iId);