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Hello everyone ,I want to use the advanced search in the management-toolbar of clay tld.

&lt;clay:management-toolbar&nbsp;<br> &nbsp; creationMenu="&lt;%=taskManagementToolbarDisplayContext.getCreationMenu() %&gt;"&nbsp;<br> &nbsp; clearResultsURL="&lt;%=taskManagementToolbarDisplayContext.getClearResultsURL()%&gt;"&nbsp;<br> &nbsp; searchActionURL="&lt;%=taskManagementToolbarDisplayContext.getSearchActionURL() %&gt;"<br> &nbsp; showSearch="&lt;%=true %&gt;"<br> &nbsp; searchContainerId="entries"<br> &nbsp; selectable="&lt;%=false %&gt;"<br> &nbsp; showAdvancedSearch="&lt;%=true %&gt;"<br> &nbsp; viewTypeItems="&lt;%=taskManagementToolbarDisplayContext.getViewTypeItems() %&gt;"<br> &nbsp; /&gt;

I know to set showAdvancedSearch to be true.It shows below.

But how can I put the advanced search form UI.

I have viewed the code of clay in ManagementToolBar.soy

    {if $showAdvancedSearch}<br> &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;{call ClayDropdown.render}<br> &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;{param contentRenderer: $contentRenderer /}<br> &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;{param icon: 'angle-down' /}<br> &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;{param items: [] /}<br> &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;{param spritemap: $spritemap /}<br> &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;{/call}<br> &nbsp;&nbsp;&nbsp;{/if}

But I do not know how to set the value of contentRenderer in the tag of management-toolbar.