multiselectfield inside widget CMSField

[blpraveen]

I found two issues when I used inside widget CMSFields
1)trying to getRecord on a no object $this->form->getRecord() in 97
2)Second it is showing tabs inside the widget

In the Widgets

function getCMSFields() {
    $fields = parent::getCMSFields(); 
    $fields->merge( 
        new FieldList(
            new MultiSelectField(
                "ShowPages",
                "",
                ShowPage::get()->map('ID','Title')->toArray()
            )
        )
    );

    $this->extend('updateCMSFields', $fields);

    return $fields;
}