Custom component which shows the list of users with the specific role

Hi!

I got the custom component wich shows list of the users with the specific rank only. How can I customize it to show the list of the users with the specific role only?

Tried to change the first line to: 

<#assign modId_request = rest("2.0","/search?q=" + "SELECT id FROM users WHERE role.name = 'Expert'"?url).data.items />

but got the following error:

InvalidReferenceException:The following has evaluated to null or missing:
==> rest("2.0","/search?q=" + "SELECT id FROM users WHERE role.name = 'Expert'"?url).data.items  [in template "preview" at line 1, column 26]

The code of the original custom component wich works fine with the ranks is:

<#assign modId_request = rest("2.0","/search?q=" + "SELECT id FROM users WHERE rank.name = 'Модератор'"?url).data.items />

<div class="lia-panel lia-panel-standard meet-the-team">
<div class="lia-decoration-border">
	<div class="lia-decoration-border-top">
		<div>
		</div>
	</div>
	<div class="lia-decoration-border-content">
		<div>
			<div class="lia-panel-heading-bar-wrapper">
				<div class="lia-panel-heading-bar">
					<span class="lia-panel-heading-bar-title">Наша команда</span>
				</div>
			</div>
			<div class="lia-panel-content-wrapper">
			<div class="lia-panel-content">
			<div class="UserList lia-component-users-widget-user-list">
				<a name="user-list"> </a>
				<div class="t-data-grid">
   					<table class="lia-list-slim">
       					<tbody>
<#list modId_request as modId>
<#assign userData = restadmin("/users/id/${modId.id}").user />
<#assign userOnlineStatus = restadmin("/users/id/${modId.id}/sessions/online/latest").user_session.login_time />
<#assign userRanking = rest("/users/id/${modId.id}/ranking/").ranking />
<#assign userLogin = userData.login/>
<#assign userID = userData.id/>
<#assign userRankTitle = userRanking.name />
<#assign userAvatar = restadmin("/users/id/${modId.id}/profiles/avatar").image.url />
							<tr class="lia-list-row lia-row-odd t-first">
								<td class="userColumn lia-data-cell-primary lia-data-cell-text">
									<div class="UserProfileSummary lia-user-item lia-user-info-group">
										<div class="UserAvatar lia-user-avatar lia-component-common-widget-user-avatar">
											<img class="lia-user-rank-icon-left" title="${userRanking.name}" alt="${userRanking.name}" src="${userAvatar}" />	
										</div>
										<div class="lia-user-attributes">
											<div class="lia-user-name">
												<span class="UserName lia-user-name lia-user-rank--------">
											<a href="/t5/user/viewprofilepage/user-id/${userID}" class="lia-link-navigation lia-page-link lia-user-name-link" style="<#if userRanking.display.color?has_content>color:#${userRanking.display.color};</#if>">
												<span class="<#if userRanking.display.bold=="true">login-bold</#if>">${userLogin}</span>
											</a>
											<img class="lia-user-rank-icon-left" title="${userRanking.name}" alt="${userRanking.name}" src="${userRanking.display.left_image.url}" />
									<#if userOnlineStatus?has_content>
													<img id="online_id" title="Онлайн" src="http://club-test.volia.com/skins/images/C1123C835A20B8ECA12F46921268A279/new_design-e5d3bd17/images/online.png">
												<#else>
													<img id="online_id" title="Оффлайн" src="http://club-test.volia.com/skins/images/0A8F08A2BEA86687F76C21BF3CF000B2/base/images/offline.png">
												</#if>
												</span>
											</div>
										</div>
									</div> 
								</td>
							</tr>
</#list>
						</tbody>
					</table>
				</div>
			</div>
			</div>
			</div>
		</div>
	</div>
	<div class="lia-decoration-border-bottom">
		<div>
		</div>
	</div>
</div>
</div>

Thanks!