gistfile1.txt

add_action( "propertyhive_property_imported_vebra_api_xml", 'set_alto_area', 10, 2 );
function set_alto_area( $post_id, $property )
{
    update_post_meta( $post_id, '_area_max', '' );
    if ( isset($property->area->max) && !empty((string)$property->area->max) ) 
    {
        update_post_meta( $post_id, '_area_max', (string)$property->area->max );
    }
    else
    {
        if ( isset($property->area->min) && !empty((string)$property->area->min) )
        {
            update_post_meta( $post_id, '_area_max', (string)$property->area->min );
        }
    }
}

add_action( "propertyhive_realhomes_property_synced", 'set_rh_area', 10, 3 );
function set_rh_area( $property_id, $post_id, $synced )
{
    if ( $synced )
    {
        $property = new PH_Property($property_id);
        update_post_meta( $post_id, 'REAL_HOMES_property_size', $property->_area_max );
        update_post_meta( $post_id, 'REAL_HOMES_property_size_postfix', 'sq ft' );
    }
}