Solution i found:
{% set table_id = module.hubdbtable_field %}
{% set queryparam2 = '&solutions__contains=' + solutionVal2 %}
{% set multiselect_column_name = item.column_name %}
{% set table = hubdb_table_rows(table_id, queryparam2) %}
{% set table_filtered_multiselect = table|selectattr(multiselect_column_name)|map(multiselect_column_name) %}
{% set used_multiselect_options = [] %}
{% for item_fil in table_filtered_multiselect %}
{% for subitem in item_fil %}
{% do used_multiselect_options.append(subitem) %}
{% endfor %}
{% endfor %}
{# remove duplicates and sort the options #}
{% set used_multiselect_options = used_multiselect_options|unique|sort(False, False, "order") %}
{% for tsa in used_multiselect_options %}
{% set choice_na = tsa.name | regex_replace("[&\\s\\-]", "") %}
<div class="cat action" results="{{ used_multiselect_options | length}}">
<label>
<input type="checkbox" id="{{tsa.id}}" name="{{tsa.name}}" value="{{choice_na}}"><span>
<div>
<svg width="12" height="10" viewBox="0 0 12 10" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M4.81753 6.49487L9.993 0.873976C10.4519 0.375576 11.1924 0.375307 11.6516 0.873374C12.116 1.37708 12.1162 2.19829 11.652 2.70226L5.79809 9.05814C5.25539 9.64738 4.37978 9.64727 3.8372 9.0579L0.347771 5.26749C-0.116169 4.76354 -0.115887 3.94258 0.348399 3.439C0.8077 2.94083 1.54836 2.94127 2.00716 3.43999L4.81753 6.49487Z" fill="white"/>
</svg>
</div>{{tsa.name}}</span>
</label>
</div>
{% endfor %}