Understanding scope of variables

[georgeo]

Actually, my question is more related to subroutines than functions. So, is the following code valid:

Code:

sub myFunction( byref total as uinteger, name$ as string )     dim length, n as ubyte     length = len(name$)     if length=0 then return     end if     for n = 0 to length-1 total = total + code(name$(n))     next n         return end sub REM Main program dim n as ubyte dim total as uinteger n = 14 myFunction(total, "Hello") print "Answer = " + str$(total) print "n = " + str$(n) stop

---with variables labelled 'n' in both the main program and the subroutine.

Thanks again