emberjs - block params for component

If I declare a component like this:

<p>
  {{#x-autosuggest source=model destination=tags minChars=0}}
    <img src="img/small_avatar.png" title="{{name}}" class="avatar"/>
  {{/x-autosuggest}}
</p>

I want the name that field to come from a context I pass using the new block params syntax. I've tried the code sample below but the context is still the context of the controller and not the argument I pass using yield in the component's hbs file.

<ul class='selections'>
  {{#each destination as |selection|}}
    <li class="selection">
      <a class="as-close" {{action "removeSelection" selection}}>x</a>
      {{yield selection}}
      {{displayHelper selection searchPath}}
    </li>
  {{/each}}
</ul>

How can pass the selection argument so I can set the name attribute in the original code snippet?