Add class to checkbox profile output

Hello,

I don’t know if it’s possible or not but in my profile form i have a checkbox column with 3 different options.
it’s a transportation checkbox with bike, car, truck.
i succed added class to each option to display an image instead of checkbox icon.

But i would like the output to display this classes (images) instead of text.

The output code is `default:

$output .= ‘<div class=”um-field’ . $classes . ‘”‘ . $conditional . ‘ data-key=”‘.$key.'”>’;

if ( isset( $data[‘label’] ) ) {
$output .= $this->field_label($label, $key, $data);
}

$res = stripslashes( $this->field_value( $key, $default, $data ) );

$output .= ‘<div class=”um-field-area”>’;
$output .= ‘<div class=”um-field-value”>’ . $res . ‘</div>’;
$output .= ‘</div>’;

$output .= ‘</div>’;

break;`

Do you have an idea how i could output this.

here the screen of edit profile mode
[URL=http://www.hostingpics.net/viewer.php?id=896833Capturede769cran20150812a768140654.png][IMG]http://img11.hostingpics.net/pics/896833Capturede769cran20150812a768140654.png[/IMG][/URL]

Thanks in advance for your help 🙂

https://wordpress.org/plugins/ultimate-member/