I have it found: I write the *init code* into a ...:
####### &init_background(); sub init_background { $bgWindow = $Window->AddLabel( -name => "bgWindow", -left => 0, -top => 0, -width => $screensize_width, -height => $screensize_height, -background => "#".$BackgroundRed.$BackgroundGreen.$BackgroundBlue, ); } ######### and now i say anywhere ###### $BackgroundRed = "59"; $BackgroundGreen = "12"; $BackgroundBlue = "00"; &init_background(); ###### and it's work fine until now ;-) cu Thorsten Sommer