flux:form.object rendert nicht ins Frontend

Liebe Kollegen,

ich habe folgendes Problem: Die von mir im Backend erstellten flux:form.object-Items werden mir nicht ins Frontend gerendert.

Meine Configuration vom Element:

<f:section name="Configuration">
		<flux:form id="hometeaser" label="Hometeaser" options="{group: 'Meine Elemente'}">

			<flux:form.sheet name="teaserContent" label="Teaser-Inhalt">
				<flux:field.input name="headline" label="Headline"/>
				<flux:form.section name="item" label="Items">
					<flux:form.object name="sliderItem" label="Slider Item" >
						<f:render partial="Modules/Image" section="Configuration" />
						<flux:field.input name="teasercategory" label="Teaser-Kategorie"/>
						<flux:field.input name="teaserheadline" label="Teaser-Headline"/>
						<flux:field.text name="teasertext" label="Teaser-Text"/>
						<flux:field.input name="teaserbutton" label="Teaser-Buttontext"/>
						<flux:field.input name="teaserurl" label="Link-Ziel"><flux:wizard.link /></flux:field.input>
					</flux:form.object>
				</flux:form.section>


			</flux:form.sheet>

			<f:render partial="Modules/Configuration" section="Designoptions" />
		</flux:form>

	</f:section>

Meine Main:

<f:section name="Main">
		<f:if condition="{bgcontainergrey} == 1">
			<div class="container-fluid bg-grey">
		</f:if>

			<div class="container">

				<h3 class="text-center">{headline}</h3>

				<div class="row">
					<f:if condition="{item.teaserItem}">
								<div class="thumbnail">
									<img alt="" src="{image}" class="img-responsive">
									<span class="label label-default">{teasercategory}</span>
									<div class="caption">
										<h4>{teaserheadline}</h4>
										<p>{teasertext}</p>
										<v:link.typolink configuration="{parameter: teaserurl, ATagParams: 'class=\"btn btn-default btn-default\"'}">
										{teaserbutton}
										</v:link.typolink></p>

									</div>
								</div>
					</f:if>

				</div>

			</div>

		<f:if condition="{bgcontainergrey}">
			</div>
		</f:if>


	</f:section>

Weiß jemand Rat?

Danke und BG
nullstein