Problems with populating combo box with editing-started signal

[Mike Martin <redtux1 gmail com>]

Hi

$datamwidgetw->{keyfieldc}->get_cells->signal_connect('editing-started'=>sub{
             print 'editing',"\n";
        my ($cell,$combo)=@_;
        my $model=$combo->get_model;
        print $model;
        $model->clear;

}

)

This doesnt do anything (at all),

$datamwidgetw->{keyfieldc} is a comboboxtext, but nothing at all happens and combobox is greyed out

any ideas