[Plugin: Query Multiple Taxonomies] specific variable.

I have a big problem and I do not know how to work it:

I put it in your sidebar.php many variables
example:

+ tax1
+ tax2
+ tax3
+ extra-tax

<?php if (is_home()) { ?>
<?php the_widget('Taxonomy_Drill_Down_Widget', array(
'title' => '',
'mode' => 'lists',
'taxonomies' => array('tax1', 'tax2', 'tax3', 'extra-tax' ) // list of taxonomy names
)); ?>

I click on “+ tax1” and I:

+ tax1
+ Tax1-bis1
+ Tax1-bis2
+ tax2
+ tax3
+ extra-tax

<?php } elseif(is_tax(array('tax1', 'tax2', etc... ))) { ?>
<?php the_widget('Taxonomy_Drill_Down_Widget', array(
'title' => '',
'mode' => 'lists',
'taxonomies' => array( 'tax1', 'Tax1-bis1', 'Tax1-bis2',  'tax2', 'tax3', 'extra-tax' ) // list of taxonomy names
)); ?>

I entered a taxonomy “+ extra-tax” that filters out other taxonomy … I wish that this taxonomy were loaded only if I select “+ extra-tax” regardless of the choices made earlier.

someone can help me?

http://wordpress.org/extend/plugins/query-multiple-taxonomies/