example

function pec_bgmp_shortcode_check()
{
    global $post;

    $shortcodePageSlugs = array(
        'home',
    );

    if( $post )
        if( in_array( $post->post_name, $shortcodePageSlugs ) )
            add_filter( 'bgmp_map-shortcode-called', 'setBGMPMapShortcodeArguments' );
}
add_action( 'wp', 'pec_bgmp_shortcode_check' );

function setBGMPMapShortcodeArguments( $options )
{
    global $bgmp;
    $coordinates = $bgmp->geocode( 'Seattle' );

    $options[ 'mapWidth' ] = '500';
    $options[ 'mapHeight' ] = '400';
    $options[ 'latitude' ] = $coordinates[ 'latitude' ];
    $options[ 'longitude' ] = $coordinates[ 'longitude' ];
    $options[ 'zoom' ] = '10';
    $options[ 'type' ] = 'ROADMAP';
    $options[ 'typeControl' ] = 'HORIZONTAL_BAR';
    $options[ 'navigationControl' ] = 'SMALL';
    $options[ 'infoWindowMaxWidth' ] = '350';

    return $options;
}
add_filter( 'bgmp_map-shortcode-called', 'setBGMPMapShortcodeArguments' );