AFNetworking an empty array as a parameter
<p>I'm trying to pass an empty array as a parameter.</p>

<pre><code>[self POST:@"offers.json" parameters:@{ @"offer": @{ @"key": [NSArray new] } } success:success failure:failure];
</code></pre>

<p>But AFNetworking cuts that parameter and didn't sent it.</p>

<p>Any help?</p>