First open the template settings [Template configuration] using

Click on Edit media variables.

-> The Media Editor [Media editor] opens.

Select the type in the list field top right. The following options are available:

-> In the lower half of the dialog box the already existing Media Variables of the selected type are displayed.

In the list field top right, you can select a language. For a variable's new creation leave "default".

Click on New.

-> The Name dialog box opens.

Enter the variable name.

Note All special characters allowed in Windows can be used here as well. Empty spaces are not allowed. Use the underscore (for example) as separator alternatively.

Confirm with OK.

The variable is displayed in the lower half of the dialog box.

Select the variable and enter the variable value in the upper half of the dialog box.

Click on Save.