{{if ! \is_array( $images )}}

{{if isset( $urls[0] )}} {{endif}}

{{if isset( $captions[0] )}} {$captions[0]} {{endif}} {{if isset( $urls[0] )}} {{endif}}

{{else}}

{{if isset( $urls[ $id ] )}} {{endif}} {{if isset( $captions[ $id ] )}} {$captions[ $id ]} {{endif}} {{if isset( $urls[ $id ] )}} {{endif}}

{{endif}}