How to hide JavaScript code ${}

I have an Excel document for translation, where are parts of JavaScript.

Example - "Dear ${task.userCaption},Please approve Leave request registered by${workflow.originatorCaption}:Employee: ${document.HPEmployeeAssignment.HPEmployeeRoleAssignment.HPPersonGeneric.name}."

How could I add embedded content for those parts which start with ${ and end with }, so that Trados understands it as a Tag?

Kind regards,

Kaspars Rutkis