Low Search - Checkboxes

{!------------/Search Form/--------------}
{exp:low_search:form query="{segment_2}" require_all="category" result_page="/dev/" form_id="sidebar-category-search" secure="no"}
  <fieldset>
{exp:channel:categories channel="entries" category_group="6" show_empty="yes"}
    <label class="category-checkbox">
    <input type="checkbox" name="category[]" value="{category_id}" {if category_id IN         ({low_search_category})}checked="checked"{/if}/>{category_name}</label>
      {/exp:channel:categories}
    <button type="submit">Search</button>
  </fieldset>
{/exp:low_search:form}

{!------------/SEARCH RESULTS/--------------}
{exp:low_search:results query="{segment_2}" limit="9"}
  {if count ==  1}
    {if '{low_search_category}' != ''}
    <p>Selected Categories:
    {exp:channel:categories show="{low_search_category}" channel="entries" style="linear" backspace="2"}{category_name}, {/exp:channel:categories}
    </p>
    {/if}
    <ul>
  {/if}

<div>
    <li>{title}</li>
</div>

  {if count == total_results}</ul>{/if}
  {if no_results}No search results{/if}

{/exp:low_search:results}