Bootstrap 3 navbar with MODX

navbar.html

<nav class="navbar navbar-default">
    <div class="container-fluid">

        <div class="navbar-header">
            <button class="navbar-toggle collapsed" data-target="#navbar-collapse" data-toggle="collapse" type="button">
                <span class="sr-only">Navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="#">Brand</a>
        </div>

        <div class="collapse navbar-collapse" id="navbar-collapse">
            [[Wayfinder? &startId=`[[++site_start]]` &level=`2` &outerClass=`nav navbar-nav` &parentClass=`dropdown` &innerClass=`dropdown-menu` &parentRowTpl=`navbar_parentRowTpl`]]
        </div><!-- /.navbar-collapse -->
    </div><!-- /.container-fluid -->
</nav>

navbar_parentRowTpl

<li[[+wf.id]][[+wf.classes]] class="dropdown" id="menu[[+id]]">
	<a class="dropdown-toggle" data-toggle="dropdown" data-target="#menu[[+id]]" href="[[+wf.link]]" title="[[+wf.title]]">
		[[+wf.linktext]]
		<b class="caret"></b>
	</a>
[[+wf.wrapper]]</li>

I am unable to get the dropdown. Please respond.