UNMONITOR [-c class-name[:>method-name]] variable-name
remove a monitor on a variable

UNMONITOR [-c class-name[:>method-name]] {control-name}   {PROP}     property-name
          {control-handle} {PROPERTY}
          {window-handle}
remove a monitor on a property of a screen control or window

UNMONITOR -env env-name
remove a monitor on a environment variable

UNMONITOR -a
remove all monitors