CRM 7.0, Rule Policy, Action Send Auto Acknowledge

Hello,

I tried to create a new rule with the IC Manager in CRM 7.0. I'm setting up a rule with action "Send Auto Acknowledge". In field mail form I'm not able to to find a mail form ID. I have set up a mail form in crm_erms_mailtempl and crm_erms_mailforms but I'm not able to select them in the action. Any idea?

Regards,

Alexander