Increment "delta" for field values. HS Content Taxonomy vs. Multistep

After node edit submit, calls function:

function hs_content_taxonomy_form_submit(&$form, &$form_state)

It`s check field widget , and of it equals 'content_taxonomy_hs' check 'tid' value.

Work`s perfect. But Multistep module set access = false for this field, and it was converted to '#type' = 'value'. So in $form_state we have such array:

Array
(
[0] => Array
(
[value] => 145
)

[1] => Array
(
[value] => 170
)

)

Without "tid". I`s normal. But function hs_content_taxonomy_form_submit creates empty "tid" array and add it to $form_state. So, each time It`s increases delta value for "content taxonomy" field.

Then it causes errors for generation $hs_selection in function:

_hierarchical_select_process_calculate_selections(&$element)