pipeline character in rules regex

[yuenrsc]

using pipeline character ( | ) in rules regex validation will break the rules, following Laravel 5.5 doc using array instead of one line is not working

Eg.

this will break:
$form->text('test')->rules('required|regex:/^(AB|CD){2}[0-9]{4}$/');

this does not work:
$form->text('test')->rules(array('required', 'regex:/^(AB|CD){2}[0-9]{4}$/'));