Hi I follow your code
but perhpas I am doing something wrong, can you tell me what is wrong?
this is the code :

sub update_bank_status {
    my ($upframe, $bank, $status) = @_;
    my $entry = $entry_widget{$bank};
    unless ($entry) {
        $entry_widget{$bank} =
                            $upframe -> Label (
                                -textvariable => \$bank
                                )-> pack ( -side => 'left',
                                           -expand => 1 );

                            $upframe -> Entry (
                                - width => 20
                            )-> pack (-side => 'left',
                                      -expand => 1);
                    }
    $entry -> configure (-text => $status);
    $entry -> configure (-foreground => $status eq "ACTIVO" ? "blue" :
+ "red" );

}

sub update_statuses {
    open(FILE, "santa1.txt") || die("Could not open file!");
    my @stat1=<FILE>;
    #close(FILE);
    while (<FILE>) {
        my ($bank, $status) = split(/\|/,@stat1);
        print $bank;
        print $status;
        update_bank_status ($upframe, $bank, $status);

    }
    close (FILE);

}
[download]

inside the mainloop I put this :

$mw->repeat(5000, \&update_statuses);
[download]

Thank you!!! I really apreciate the effort