Hello HDB, $opsm is defined in the code below however the Add Manifest menu does not return to the Ops menu it needs to return to the Manifest Menu:

sub opsmgt {

if ( !Exists( $opsm ) ) {
$opsm = $mw->Toplevel();
$opsm->resizable(0,0);

my $opsmframe2  = $opsm->Frame()->pack( -side => 'right', -fill => 'bo
+th', -anchor, 'e');
my $opsmframe   = $opsm->Frame()->pack( -side => 'left',  -fill => 'bo
+th', -anchor, 'w');

$opsm->geometry('400x125+0+0');
$opsm->title( "Operations Management Menu" );
my $opsmbtn1  = $opsmframe->Button(  -text, 'List Creator', -command =
+> sub { &listcreator; $opsm->iconify;})->grid(     -row, 0, -column, 
+0, -sticky => 'nsew');
$balloon->attach($opsmbtn1, -balloonmsg => "List Creator");
my $opsmbtn2  = $opsmframe->Button(  -text, 'Waybill Generator', -comm
+and => sub { &waybillgenerator; $opsm->iconify;})->grid(    -row, 1, 
+-column, 0, -sticky => 'nsew');
$balloon->attach($opsmbtn2, -balloonmsg => "Waybill Generator");
my $opsmbtn3  = $opsmframe->Button(  -text, 'Material Order Creator', 
+-command => sub { &materialordercreator; $opsm->iconify;})->grid(  -r
+ow, 2, -column, 0, -sticky => 'nsew');
$balloon->attach($opsmbtn3, -balloonmsg => "Material Order Creator");
my $opsmbtn4  = $opsmframe->Button(  -text, 'Truck Scheduler', -comman
+d => sub { &truckscheduler; $opsm->iconify;})->grid( -row, 3, -column
+, 0, -sticky => 'nsew');
$balloon->attach($opsmbtn4, -balloonmsg => "Truck Scheduler");
my $opsmbtn5  = $opsmframe2->Button(  -text, 'Trailer Manifest', -comm
+and => sub { &manifest; $opsm->iconify;})->grid( -row, 0, -column, 3,
+ -sticky => 'nsew');
$balloon->attach($opsmbtn5, -balloonmsg => "Trailer Manifest");
my $opsmbtn6  = $opsmframe2->Button( -text, 'Routes', -command => sub 
+{ &routes; $opsm->iconify;})->grid( -row, 1, -column, 3, -sticky => '
+nsew');
$balloon->attach($opsmbtn6, -balloonmsg => "Routes");
my $opsmbtn7  = $opsmframe2->Button( -text, 'Truck Hostler')->grid( -r
+ow, 2, -column, 3, -sticky => 'nsew');
$balloon->attach($opsmbtn7, -balloonmsg => "Truck Hostler");
my $opsmbtn8  = $opsmframe2->Button( -text, 'Return To Main Menu', -co
+mmand => sub { $opsm->withdraw; $mw->deiconify;
$btn7->configure(-state=>'normal'), $btn10->configure(-state=>'normal'
+) ;})->grid( -row, 3, -column, 3, -sticky => 'nsew');
$balloon->attach($opsmbtn8, -balloonmsg => "Return To Main Menu");
} else {
$opsm->deiconify();
$opsm->raise();
}
} # END OPERATIONS
[download]

You still have not shown where you declare $opsm. It would be useful to see how that line looks like: my $opsm; or similar. Also in which order do you declare and call the functions you have provided so far.

In addition I have two question to this snippet:

if ( !Exists( $mm ) ) {
my $mm = $mw->Toplevel();
...
[download]

Is Exists a Tk specific function (because of the capital E)? You declare a new variable $mm just after testing it in the line before. Is this intentional?

Apologies for asking one question after the other but I still have no clear picture what is going on...

$opsm, $mm and others are defined at the beginning of the program like this: my ($opsm, $mm, $sbm); I've since removed the If !Exists line and it still has no bearing...scratching my head here as the code is exactly like the previous menus. What should happen is once a Manifest has been added that window disappears which it does and the Manifest menu should reappear which it does not. If I try to call the Ops menu $opsm that works the $mm (Manifest Menu) does not iconify.