Dynamic Values for Custom Entities in Email Templates

Hi everyone,

I am trying to use values from a custom entity in a global E-Mail template, according to this blog:

http://www.crmsoftwareblog.com/2015/11/dynamic-values-custom-entities-email-templates/

My entity name is: new_checkliste2

The displayed name is: Machbarkeitsanalyse

For testing i was trying to get the information from the created on(Erstellt am) field.

Therefore I tried following "combinations"

{!Machbarkeitsanalyse:Erstellt am;Test}

{!Machbarkeitsanalyse : Erstellt am;Test}

{!new_Checkliste2:Erstellt am;Test}

{!new_Checkliste2 : Erstellt am;Test}

{!new_Checkliste2:Created on;Test}

{!new_Checkliste2 : Created on;Test}

None of them worked. they didn't turn into the yellow link thingy after safing.

Anybody got a clue what i am doing wrong?

I'd really appreciate any help i can get.