diff --git a/lib/Service/TicketService.php b/lib/Service/TicketService.php
index 80843a1..4f82622 100644
--- a/lib/Service/TicketService.php
+++ b/lib/Service/TicketService.php
@@ -72,6 +72,19 @@ class TicketService {
 		return $this->resolveTicket($this->ticketMapper->insert($ticket));
 	}
 
+	
+
+	public function assign($id, $userId): array{
+		$matrixUser = $this->getOrCreateUser($userId);
+		$ticket = $this->ticketMapper->findTicket($id);
+		$roomID= $ticket->getMatrixRoom();
+		$this->matrix->setProperty($roomID, "upschooling.ticket", array(
+			"matrixHelperUser" => $matrixUser->getMatrixUser()
+		));
+		$ticket->setMatrixHelperUser($matrixUser->getMatrixUser());
+		return $this->resolveTicket($this->ticketMapper->update($ticket));
+	}
+
 	public function update($id, $title, $content, $userId) {
 		throw new Exception("Not implemented");
 	}
@@ -93,7 +106,7 @@ class TicketService {
 			$title = array_get($matrixTicketContent, "title", "Untitled");
 			$description = array_get($matrixTicketContent, "description", "");
 			$lastModified = $this->matrix->getLastEventDate($ticket->getMatrixRoom());
-			$matrixHelperUserName = array_get($matrixTicketContent, "matrixHelperUserName", "nicht zugewiesen"); 
+			$matrixHelperUser = array_get($matrixTicketContent, "matrixHelperUser", "nicht zugewiesen"); 
 			$expirationDate = array_get($matrixTicketContent, "expiration date", "");
 			return array(
 				'ticketId' => $ticketId,
@@ -101,7 +114,7 @@ class TicketService {
 				'lastModified' => $lastModified,
 				'title' => $title,
 				'description' => $description,
-				'matrixHelferName' => $matrixHelperUserName,
+				'matrixHelperUser' => $matrixHelperUser,
 				'expirationDate' => $expirationDate 
 			);
 		} catch (MatrixException | RoomNotFoundException $e) {