diff --git a/web/typo3conf/ext/ep_products/Classes/Controller/ProductController.php b/web/typo3conf/ext/ep_products/Classes/Controller/ProductController.php
index 00e2aaca..1822b24e 100644
--- a/web/typo3conf/ext/ep_products/Classes/Controller/ProductController.php
+++ b/web/typo3conf/ext/ep_products/Classes/Controller/ProductController.php
@@ -217,17 +217,6 @@ class ProductController extends ActionController
 
     public function teasergroupAction()
     {
-        $filterSettings = new FilterSettings();
-        if ((int) $this->settings['regionUid'] > 0) {
-            $filterSettings->setRegionUids([$this->settings['regionUid']]);
-        } elseif ((int) $this->settings['countryUid'] > 0) {
-            $filterSettings->setCountryUids([$this->settings['countryUid']]);
-        } elseif ((int) $this->settings['hotelUid'] > 0) {
-            $filterSettings->setHotelUid($this->settings['hotelUid']);
-        }
-        if ((int) $this->settings['conceptUid'] > 0) {
-            $filterSettings->setConceptUids([$this->settings['conceptUid']]);
-        }
         $filterSettings = $this->filterService->getFiltersettingsFromSettings($this->settings);
         $dateAuto = !$this->settings['dateFrom'] && !$this->settings['dateTo'];
         $excludedConceptUids = GeneralUtility::trimExplode(',', $this->settings['excludedConceptUids'], true);
diff --git a/web/typo3conf/ext/ep_products/Classes/Service/FilterService.php b/web/typo3conf/ext/ep_products/Classes/Service/FilterService.php
index d9ca23c7..fd1f1648 100644
--- a/web/typo3conf/ext/ep_products/Classes/Service/FilterService.php
+++ b/web/typo3conf/ext/ep_products/Classes/Service/FilterService.php
@@ -365,8 +365,9 @@ class FilterService implements SingletonInterface
         } elseif (isset($settings['hotelUid']) && (int) $settings['hotelUid'] > 0) {
             $filterSettings->setHotelUid($settings['hotelUid']);
         }
-        if (isset($settings['conceptUid']) && (int) $settings['conceptUid'] > 0) {
-            $filterSettings->setConceptUids([$settings['conceptUid']]);
+        $conceptUids = GeneralUtility::trimExplode(',', $settings['conceptUid'], true);
+        if ($conceptUids) {
+            $filterSettings->setConceptUids($conceptUids);
         }
         if (isset($settings['dateFrom']) && (int) $settings['dateFrom'] > 0) {
             $dateFrom = new \DateTime();
diff --git a/web/typo3conf/ext/ep_products/Configuration/FlexForms/flexform_product_teaser.xml b/web/typo3conf/ext/ep_products/Configuration/FlexForms/flexform_product_teaser.xml
index b628c138..93d83a1c 100644
--- a/web/typo3conf/ext/ep_products/Configuration/FlexForms/flexform_product_teaser.xml
+++ b/web/typo3conf/ext/ep_products/Configuration/FlexForms/flexform_product_teaser.xml
@@ -76,7 +76,7 @@
 							<displayCond><![CDATA[FIELD:switchableControllerActions:=:Product->teasergroup]]></displayCond>
 							<config>
 								<type>select</type>
-								<renderType>selectSingle</renderType>
+								<renderType>selectSingleBox</renderType>
 								<foreign_table>tx_epproducts_domain_model_concept</foreign_table>
 								<foreign_table_where>ORDER BY name</foreign_table_where>
 								<items type="array">
@@ -85,8 +85,9 @@
 										<numIndex index="1">0</numIndex>
 									</numIndex>
 								</items>
+								<size>5</size>
 								<minitems>0</minitems>
-								<maxitems>1</maxitems>
+								<maxitems>10</maxitems>
 							</config>
 						</TCEforms>
 					</settings.conceptUid>