Index: units/helpers/search_helper.php
===================================================================
--- units/helpers/search_helper.php	(revision 13862)
+++ units/helpers/search_helper.php	(working copy)
@@ -494,6 +494,9 @@
 		 */
 		function getRangeValue($value)
 		{
+			// fix user typing error, since MySQL only sees "." as decimal separator
+			$value = str_replace(',', '.', $value);
+
 			return strlen($value) && is_numeric($value) ? $this->Conn->qstr($value) : false;
 		}