[showyamap]
    [placemark coordinates="53.709992,32.654287" ]
    [placemark coordinates="51.886690,38.436733" ]
    [placemark coordinates="51.886690,38.436733" ]
    [/showyamap]

<?php if( have_rows('mo_ml') ): ?>
                        <?php $begin_shortcode = ('[showyamap]'); ?>
                            <?php $end_shortcode = ('[/showyamap]'); ?>
                            <?php echo $begin_shortcode ?>

                        <?php while( have_rows('mo_ml') ): the_row(); ?>


                                <?php if( have_rows('mo_places') ): ?>
                                    <?php while( have_rows('mo_places') ): the_row(); ?>

                                         <?php  $mo_lattitude = get_sub_field( 'massimo_lattitude');
                                                $mo_longitude = get_sub_field( 'mo_longitude');

                                                echo ('[placemark coordinates="'. $mo_lattitude .',' . $mo_longitude .'" ]');
                                            ?>

                                    <?php endwhile; ?>
                                <?php endif; ?>
                        <?php endwhile; ?>
                        <?php echo $end_shortcode ?>
                    <?php endif; ?>