Retrieve data from database to checkbox group

I have a checkbox group with 5 items. And I have saved the record to database. In another form, I want to call the record from database to checkbox group. The value that I save is comma separated value, example : 1,3,5 and the result is must be like this. I need a clue to solved this. Thank you

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Hi Yudhizth ,

Please use a Custom Code action to explode the list back into an array

<?php
$form->data['xxx'] = explode(',', $form->data['xxx']);
?>

Bob