Any way to keep some values over different connections; how about fail-over?

We are on v10. I would like to create a namespace and declare some variables under it. So something like this:

 

 

set newNameSpace::myVariable "test"

 

 

this gives an error:

 

can't set "newNameSpace::myVariable ": parent namespace doesn't exist while executing "set newNameSpace::myVariable "test""

 

 

Do I need to declare the namespace first? How can I do that?

 

 

Thanks!