configbody conifgure variable in batch

  class sampleconf {
      # a sample class with a single public variable
      public method setpulicv;
      public variable publicvab ;# this var is adjusted using the configure -publicv...
      constructor {} {
      }
  }
 
  body sampleconf::setpulicv { cn } {
  set publicvab $cn;
  puts $publicvab;
  }

  # add a configbody for publicv
  configbody sampleconf::publicvab   {
         puts $publicvab
  set ab [lappend publicvab "aaaa" ]
  puts $ab
  }
 
  # create a sample instance of the class:

  set btn [sampleconf  h2]
 
  h2 setpulicv "A value which is not sent via the configbody"
  # change the publicv again by configure and again you see a message box.

  h2 configure -publicvab "A new Value"
   # change the publicv by configure and you see a message box.
 
  h2 configure -publicvab "The same old Value"
 
  h2 configure -publicvab "Another Value"
 
  h2 setpulicv "A value which is not sent via the configbody"
 
  set aaa [h2 cget -publicvab]
  puts $aaa