How to use Composer variables in customized deliverable?

When I switch to Customize Deliverable in a Togaf project, all the variables in the document template stop working!
For example, when I put a construct, for example, $ {PROJECT, PROPERTY = name}, it does not map the name of the project, remaining the same as it is written!
What I do wrong?

Sorry for late reply.

Sorry, Customized Deliverable does not support ${...} fields.
You have to use Template to modify the document.

You may create your template to generate project name, as below:

More details of template:

and what is style="@heading+" ?