At first open the Template configuration via

Click on Edit media variables.

-> The 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.

Click on New.

-> The dialog box Name 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.