set dimensions field to be required

add_filter( 'wcv_product_length ', function( $field ) {
$field['custom_attributes'] = array( 'required' => '' );
return $field;
});

add_filter( 'wcv_product_width', function( $field ) {
$field['custom_attributes'] = array( 'required' => '' );
	return $field;
});


add_filter( 'wcv_product_height', function( $field ) {
$field['custom_attributes'] = array( 'required' => '' );
	return $field;
});

add_filter( 'wcv_product_weight', function( $field ) {
$field['custom_attributes'] = array( 'required' => '' );
return $field;
});

add_filter( 'wcv_product_length', function( $field ) {
$field['custom_attributes'] = array( 'required' => '' );
return $field;
});

add_filter( 'wcv_product_width', function( $field ) {
$field['custom_attributes'] = array( 'required' => '' );
return $field;
});

add_filter( 'wcv_product_height', function( $field ) {
$field['custom_attributes'] = array( 'required' => '' );
return $field;
});