Highlight variable

Can you tell me how to configure Nova in order to highlight a variable in all the code only by putting the cursor on it?
(to save time and not to have to select it each time by making a double-click)
Thanks in advance

Following the answers and help I received in my other question, I also found the answer for this question.

Url of my other question: Code auto complete

The reason of the problem is that Nova does not manage and does not interpret the remote files either for the complete auto or the highlighting of the variables.

It is that necessary to make a local project, and set up the automatic backup on the remote server instead of edit a file directly on remote.