Hello!
Currently I my group's title is pulled from a field value. So if the field's value is 'Headline' then the group_title becomes 'Headline'.
'group_title' => array('field' => 'headline' ),
I would like to add a number after each title like 'Headline 1', 'Headline 2', 'Headline 3'...
I've tried but the code below but the result is 'Array 1', 'Array 2', 'Array 3'...
'group_title' => array('field' => 'headline' ) . ' {#}',