Silly scope shadowing question

[halloleo]

is it possible to set a gloabal varaibes from a procure whicvh shadows thos 
global varaible?

My use case: 
    
    
    var verbose = false
    
    proc a() =
      # Uses verbose
    proc b() =
      # Uses verbose
    
    proc main(verbose, ...) =
      (global) verbose  = verbose
      a()
      b())
    
    
    Run

I'm asking this because I'm using `cligen` as the cli parser and my option is 
meant to be called `--verbose` on the comamd line.

Easiest solution is to call the global variable `chatty` and be done wioth teh 
shadowing, but now I', curious whether I Nim ahs a mechanism for this.