Hi,if I use the ticket.last_update - variable in any email - template nothing does work anymore. I only get a blank site.In the webserver - logfile I can find this entries -> PHP Fatal error: Uncaught exception 'OrmException' with message 'Ticket: last_update: Feld nicht definiert' in /XXXX/web/include/class.orm.php\nStack trace:\n#0 /XXXX/web/include/class.orm.php(386): VerySimpleModel->get('last_update', NULL)\n#1 /XXXX/web/include/class.ticket.php(1881): VerySimpleModel->__get('last_update')\n#2 /XXXX/web/include/class.variable.php(89): Ticket->getVar('last_update', Object(VariableReplacer))\n#3 /XXXX/web/include/class.variable.php(134): VariableReplacer->getVar(Object(Ticket), 'last_update')\n#4 /XXXX/web/include/class.variable.php(168): VariableReplacer->_resolveVar('ticket.last_upd...')\n#5 /XXXX/web/include/class.variable.php(115): VariableReplacer->_parse('%{ticket.name},...')\n#6 : VariableReplacer->replaceVars('%{ticket.name},...')\n#7 /XXXX/web/include/class.variable.php(113): array_map(Array, Array)\n#8 /XXXX/web/include/class.osticket.php(147): VariableReplacer->rep in /XXXX/web/include/class.orm.php on line 382, referer: https://XXXX/tickets.php?id=XXXBy the way: a fulll list of the availlable variables with some explanation and how and WHERE they are usable would be very helpfull ;) SOmetimes there is a warning that a variable could cause errors - but it is working without any problems. Sometimes no warning (for example this last_update) but nothing works anymore.Thanks for your help!Walhalla