How do I disable signatures?

[LoF]

I want to disable the option to view the signatures of users in a specific forum.
I searched an option in vBulletin and I didn't find.

After this, I tried to add something in the style:

<if condition="$forumid == 336">
<!-- <if condition="$bbuserinfo['signature']"> 
                                <div style="float:$stylevar[right]"><label for="cb_signature"><input type="checkbox" name="signature" value="1" id="cb_signature" tabindex="5" checked="checked" />$vbphrase[show_your_signature]</label></div> 
                            </if> -->
<else /> 
     <if condition="$bbuserinfo['signature']"> 
                                <div style="float:$stylevar[right]"><label for="cb_signature"><input type="checkbox" name="signature" value="1" id="cb_signature" tabindex="5" checked="checked" />$vbphrase[show_your_signature]</label></div> 
                            </if>
</if>

It didn't work, so I tried this:

<if condition="$forumid == 336">
<if condition="$bbuserinfo['signature']"> 
                                <div style="display: none; float:$stylevar[right]"><label for="cb_signature"><input type="checkbox" name="signature" value="1" id="cb_signature" tabindex="5" checked="checked" />$vbphrase[show_your_signature]</label></div> 
                            </if>
<else /> 
     <if condition="$bbuserinfo['signature']"> 
                                <div style="float:$stylevar[right]"><label for="cb_signature"><input type="checkbox" name="signature" value="1" id="cb_signature" tabindex="5" checked="checked" />$vbphrase[show_your_signature]</label></div> 
                            </if>
</if>

But it didn't work too..

What can I do?

Edit: OMGG!!! It was the quick reply!!!!!! It was SHOWTHREAD template.
I'll try now in postbit template.

Here in postbit, it didn't work too:

<if condition="$forumid == 336">
        <!-- $template_hook[postbit_signature_start]
        
        <if condition="$post['signature']">
        
            <div>
                __________________<br />
                $post[signature]
            </div>
        
        </if>
        
        $template_hook[postbit_signature_end] -->
                <else />
        $template_hook[postbit_signature_start]
        
        <if condition="$post['signature']">
        <!-- sig -->
            <div>
                __________________<br />
                $post[signature]
            </div>
        <!-- / sig -->
        </if>
        
        $template_hook[postbit_signature_end]
        </if>