Task ID expression on Request Approval Action

hello,

We have a Request Approval Action assigned to a single user (so a single task is created). Is there a way of obtaining the Task ID in order to embed it as expression into the Task notification? I see there is Task Name, Task Description, but no way to get the Task ID.

I understand that there is the query Task List option, however I need the Task ID within the Task notification. 

thanks,

Spyros