diff --git a/src/Controller/api/v1/VoteController.php b/src/Controller/api/v1/VoteController.php
index b07979a..a2a1830 100644
--- a/src/Controller/api/v1/VoteController.php
+++ b/src/Controller/api/v1/VoteController.php
@@ -44,17 +44,25 @@ class VoteController extends EmailsController {
 		string $custom_url,
 		Request $request,
 		ChoiceRepository $choice_repository
-		) {
+	) {
 
 
+		/***
+		 * checks before persisting
+		 */
 		$em    = $this->getDoctrine()->getManager();
 		$emPol = $em->getRepository( Poll::class );
 		$poll  = $emPol->findOneByCustomUrl( $custom_url );
 
+		// check : existence of poll
 		if ( ! $poll ) {
 			return $this->json( [ 'message' => 'poll "' . $custom_url . '" not found' ], 404 );
 		}
-
+		// check : limit of number of participation max
+		if ( count( $poll->getStacksOfVotes() ) == $poll->getVotesMax() ) {
+			return $this->json( [ 'message' => 'poll "' . $custom_url . '" not allowed to have more stack of votes than ' . $poll->getVotesMax() ],
+				403 );
+		}
 		$data = $request->getContent();
 		$data = json_decode( $data, true );
 
@@ -63,32 +71,30 @@ class VoteController extends EmailsController {
 
 		$owner = new Owner();
 		$owner
-			->addPoll( $poll )
-
-		;
+			->addPoll( $poll );
 		$newStack = new StackOfVotes();
 		$newStack
-			->setPoll($poll)
+			->setPoll( $poll )
 			->setIp( $_SERVER[ 'REMOTE_ADDR' ] )
 			->setPseudo( $data[ "pseudo" ] )
 			->setOwner( $owner );
 		$owner
-			->setPseudo($data['owner'][ "pseudo" ])
-			->setPseudo($data['owner'][ "email" ])
-			->addStackOfVote($newStack);
+			->setPseudo( $data[ 'owner' ][ "pseudo" ] )
+			->setPseudo( $data[ 'owner' ][ "email" ] )
+			->addStackOfVote( $newStack );
 
 		// TODO manage new comment
-		$emChoice = $choice_repository;
+		$emChoice   = $choice_repository;
 		$newComment = new Comment();
-		$newComment->setPseudo($data ['pseudo'])
-			->setPoll($poll)
-			->setText($data['comment']);
-		$owner->addComment($newComment);
+		$newComment->setPseudo( $data [ 'pseudo' ] )
+		           ->setPoll( $poll )
+		           ->setText( $data[ 'comment' ] );
+		$owner->addComment( $newComment );
 
-		$em->persist($newComment);
+		$em->persist( $newComment );
 
 		foreach ( $data[ 'votes' ] as $vote ) {
-			if(!$vote[ 'value' ]){
+			if ( ! $vote[ 'value' ] ) {
 				continue;
 			}
 			$newVote = new Vote();