display only label product-unavailable

[Márcio Silva]

Hi

I need show in categories only the label out stock.
I not want show in stock and last itens

Will possible criate a rule to show      {$product.availability_message}
only when product will be  product-unavailable

Code below

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{block name='product_availability'}
            <span id="product-availability">
              {if $product.show_availability && $product.availability_message}
                {if $product.availability == 'available'}
                  <i class="material-icons product-available">&#xE5CA;</i>
                {elseif $product.availability == 'last_remaining_items'}
                  <i class="material-icons product-last-items">&#xE002;</i>
                {else}
                  <i class="material-icons product-unavailable">&#xE14B;</i>
                {/if}
                {$product.availability_message}
              {/if}
            </span>
          {/block}

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