my $cb_update_actual	= $FrameDataToAnalyze -> Checkbutton(	-text=>"",
								-offvalue=>0,
								-onvalue=>1,
								-command=> sub {
									if ($UpdateActual) {
										$entry_actual_value->configure(-state=>"normal");
									} else {
										$entry_actual_value->configure(-state=>"disabled");
									}
								},
								-variable=>\$UpdateActual);
$cb_update_actual -> select();