Is it possible to set a customer context variable in Zobot

Is it possible to set a customer context variable in Zobot

Hi, 

I want to use a context variable to route users down different paths in my Zobot chat flow.

I know I can do this when the user enters data. 

But I want to know if I can use a variable that is 'hard coded' on the card, that the user is unaware of. 

Use case:

I have several paths of a flow in Zobot. Each relates to a specific query that a user has about our service.

At the end of these paths, I want to redirect them to the same 'send email' card. The email is sent to our support team (creating a support ticket).

In the email body and subject, I want to use the values retrieved from the hard coded context variables.

This will give some context to our support agents, and will help them answer the ticket. 

Again, the user does not need to see these variables. 

This will save me from creating a specific email for each path, allowing me to reuse the same email card. 

Is this possible please?

Thanks!