diff --git a/competency_iena_competencies_api.php b/competency_iena_competencies_api.php
index d5b122c5140e9972ebf641f180b7c3246fd4268e..6423b9becc46e2fef955655b7f02d1eab3a09d07 100644
--- a/competency_iena_competencies_api.php
+++ b/competency_iena_competencies_api.php
@@ -69,18 +69,18 @@
 			
 			
 		}
-		else if (isset($_POST["addactivity"])) {
-			$value = $_POST["addactivity"];
+		else if (isset($_POST["addactivities"])) {
+			$value = $_POST["addactivities"];
 			//return var_dump($value);
 			
 			$resultInsert="";
 			$errorInsert=false;
-			/*$refI = new block_competency_iena_referentiel();
+			$moduleI = new block_competency_iena_module();
 			
-			foreach($value[0] as $compid){
-				$is_insert = $refI->add_competency_in_course($compid, $value[1]);
+			foreach($value[0] as $activityid){
+				$is_insert = $refI->add_matrix_module($activityid, $value[1]);
 				if (!$is_insert) {
-					$resultInsert.=" ".$compid.",";
+					$resultInsert.=" ".$activityid.",";
 					$errorInsert=true;
 
 				}
@@ -90,9 +90,7 @@
 			}
 			else{
 				echo get_string('error_insert', 'block_competency_iena').$resultInsert;
-			}*/
-			echo "hello";
-			
+			}			
 			
 		}
 //		updateTextRef
diff --git a/entity/block_competency_iena_module.php b/entity/block_competency_iena_module.php
index f4b1abec6a2324535f9a599e851dd4cbe841ac5a..07c10a61b2136a592f1677dbb044656eabd8366f 100644
--- a/entity/block_competency_iena_module.php
+++ b/entity/block_competency_iena_module.php
@@ -161,7 +161,7 @@ class block_competency_iena_module {
             return $requete;
         }
 
-        public function add_matrix_modules($cmid, $sectionid){
+        public function add_matrix_module($cmid, $sectionid){
             global $DB;
             $record = new stdClass();
             $record->cmid=$cmid;
@@ -170,7 +170,7 @@ class block_competency_iena_module {
             return $request;
         }
 
-        public function delete_matrix_modules($cmid, $sectionid){
+        public function delete_matrix_module($cmid, $sectionid){
             global $DB;
             $request = $DB->delete_records('block_competency_iena', array('cmid' => $cmid, 'sectionid' => $sectionid));
             return $request;
diff --git a/js/matrix.js b/js/matrix.js
index 72c5ab35adb326b18e5ff3081fce04b68718c85d..ee60ff6a5a28a3883f320ef6ec55174d8146a049 100644
--- a/js/matrix.js
+++ b/js/matrix.js
@@ -35,7 +35,7 @@ jQuery(document).ready(function($){
 	});
 
 
-	function treed(o){
+	function treed(o, treeid){
 		var openedClass = 'glyphicon-minus-sign';
 		var closedClass = 'glyphicon-plus-sign';
 
@@ -48,7 +48,7 @@ jQuery(document).ready(function($){
 			}
 		};
 		//initialize each of the top levels
-		var tree = $('#tree3');
+		var tree = $('#'+treeid);
 		tree.addClass("tree");
 		tree.find('li').has("ul").each(function () {
 			var branch = $(this); //li with children ul
@@ -86,7 +86,8 @@ jQuery(document).ready(function($){
 	}
 
 
-treed({openedClass:'fa-caret-down', closedClass:'fa-caret-right'});
+treed({openedClass:'fa-caret-down', closedClass:'fa-caret-right'}, 'tree3');
+treed({openedClass:'fa-caret-down', closedClass:'fa-caret-right'}, 'tree-activities');
 
 
 });
@@ -152,20 +153,20 @@ function addCompetencies(url, idcourse){
 
 function addActivities(url, idcourse){
 	//var idcomp =  $('#id-comp-iena').val();
-	var arrayComp=[];
-	var comp = $('#tree3').find('.iena-checkbox-cpt:checked');
-	for(var i=0; i<comp.length;i++){
-		arrayComp.push(comp[i].value);
+	var arrayActivities=[];
+	var activities = $('#tree-activities').find('.iena-checkbox-activities:checked');
+	for(var i=0; i<activities.length;i++){
+		arrayActivities.push(activities[i].value);
 	}
 	var value = [];
-	value[0]=arrayComp;
+	value[0]=arrayActivities;
 	value[1] = idcourse;
 	$.ajax({
 		url: url,
 		type: 'POST',
 		timeout: 10000,
 		contentType: 'application/x-www-form-urlencoded',
-		data: {addcomp:value},
+		data: {addactivities:value},
 		success: function(result) {
 			if (result.trim() == "true"){
 				location.reload();
@@ -338,21 +339,54 @@ function selectCompetency(obj){
 
 		}
 	}
-	var count=countSelectedCompetencies();
+	var count=countSelectedObjects('competencies');
 	if(count==0){
-		$('#btn-comp-iena').attr('disabled');
+		$('#btn-comp-iena').prop('disabled', true);;
 	}
 	$("#iena-counter-cpt").html(count);
 }
 
 
-//Sélectionne/déselectionne une compétence et ses enfants
+//Sélectionne/déselectionne une activité et ses enfants
 function selectActivity(obj){
 	console.log("on select une co");
+	 $('#btn-activities-iena').removeAttr('disabled');
+	box = $(obj);
+	if(box.is(':checked')){
+		children=$(obj).parent().find('.iena-checkbox-activities');
+		if(children.length>0){
+			for(var i=0; i<children.length; i++){
+				children.prop('checked', true);
+			}
+
+		}
+	}
+	else if(!box.is(':checked')){
+		children=$(obj).parent().find('.iena-checkbox-activities');
+		if(children.length>0){
+			for(var i=0; i<children.length; i++){
+				children.prop('checked', false);
+			}
+
+		}
+	}
+	var count=countSelectedObjects('activities');
+	if(count==0){
+		$('#btn-activities-iena').prop('disabled', true);;
+	}
+	$("#iena-counter-activities").html(count);
 }
 
 //Compte le nombre de compétences sélectionnées
-function countSelectedCompetencies(){
-	return $('#tree3').find('.iena-checkbox-cpt:checked').length;
+function countSelectedObjects(object){
+	if(object=='competencies'){
+		return $('#tree3').find('.iena-checkbox-cpt:checked').length;
+	}
+	else{
+		return $('#tree-activities').find('.iena-checkbox-cpt:checked').length;
+	}
+	
 }
 
+
+
diff --git a/lang/en/block_competency_iena.php b/lang/en/block_competency_iena.php
index 05cf22046cccfe10522082b1af1497b670841014..0826b23c93146fd59f36361306c96ff9bb8df7de 100644
--- a/lang/en/block_competency_iena.php
+++ b/lang/en/block_competency_iena.php
@@ -82,4 +82,5 @@
     $string['activities_placeholder']="Filter activities/resources";
     $string['count_activities']=" activities/resources selected";
     $string['add_activities']="Add activities/resources";
+    $string['select_act'] = 'Activites selector;
 ?>
\ No newline at end of file
diff --git a/lang/fr/block_competency_iena.php b/lang/fr/block_competency_iena.php
index 59f78f3f66fbd1099f2042f9275c1781876b9f89..4a103cda3221c264324038353338759c29b15cf2 100644
--- a/lang/fr/block_competency_iena.php
+++ b/lang/fr/block_competency_iena.php
@@ -81,6 +81,7 @@
     $string['activities_placeholder']="Filter les activités/ressources du cours";
     $string['count_activities']=" activité(s)/ressource(s) sélectionnée(s)";
     $string['add_activities']="Ajouter les activités/ressources";
+    $string['select_act'] = 'Sélecteur d\'activités;
 
 
 
diff --git a/styles.css b/styles.css
index ba9ec96ff4fc4fa6492fd0b39b2783966f016f0a..8aba9b96291e2af367619cbb6b994509c0784374 100644
--- a/styles.css
+++ b/styles.css
@@ -157,12 +157,14 @@
     margin-bottom: 0px !important;
 }
 
-.fram-iena .iena-checkbox-cpt{
+.fram-iena .iena-checkbox-cpt,
+.iena-cpt-sel-tree .iena-checkbox-activities{
     margin-right: 5px;
     vertical-align: middle;
 }
 
-.fram-iena a{
+.fram-iena a,
+.activity-iena a{
     vertical-align: middle;
     display: inline-block;
     cursor: pointer;
diff --git a/templates/modal_activities.mustache b/templates/modal_activities.mustache
index b07241fd130576c5127327ca6d0e79c4d931a36d..3e9562916dc661c7eb41d1a3703399fe779d4a80 100644
--- a/templates/modal_activities.mustache
+++ b/templates/modal_activities.mustache
@@ -4,7 +4,7 @@
 		<!-- Modal content-->
 		<div class="modal-content">
 			<div class="modal-header">
-				<h4 class="modal-title">{{# str }}select_comp,block_competency_iena{{/str}}</h4>
+				<h4 class="modal-title">{{# str }}select_act,block_competency_iena{{/str}}</h4>
 				<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 			</div>
 			<div class="modal-body">
@@ -16,14 +16,14 @@
 						<input placeholder='{{#str}}activities_placeholder, block_competency_iena{{/str}}' type='text' id='filter-iena-activities' class='form-control mb-3'>
 					
 							<div class="well well-lg iena-cpt-sel-tree mb-3">
-								<ul id='tree3'>
-									<li class=''>
+								<ul id='tree-activities'>
+									<li class='activity-iena '>
 									{{#sections}}
-										<li class="section-{{id}}">
+										<li class="activity-iena section-{{id}}">
 											<input class="iena-checkbox-activities" onclick="selectActivity(this, 'section')" type="checkbox" id="{{name}}" value="{{id}}"><a>{{name}}</a>
 											<ul>
 												{{#modules}}
-												<li>
+												<li class="activity-iena">
 													<input class="iena-checkbox-activities" onclick="selectActivity(this, 'activity')" type="checkbox" id="{{name}}" value="{{id}}"><a>{{name}}</a>
 												</li>
 												{{/modules}}
@@ -37,9 +37,9 @@
 							</div>
 						<div class="iena-footer-cpt">
 							<div class="iena-text-counter">
-								<span id="iena-counter-cpt">0</span> {{#str}} count_activities, block_competency_iena {{/str}}
+								<span id="iena-counter-activities">0</span> {{#str}} count_activities, block_competency_iena {{/str}}
 							</div>
-							<button id='btn-comp-iena' disabled='disabled' onclick="addActivities('{{update_activities_link}}', '{{courseid}}')" type="button" class="btn btn-success btn-block mb-3">{{# str }}add_activities, block_competency_iena{{/ str }}</button>
+							<button id='btn-activities-iena' disabled='disabled' onclick="addActivities('{{update_activities_link}}', '{{courseid}}')" type="button" class="btn btn-success btn-block mb-3">{{# str }}add_activities, block_competency_iena{{/ str }}</button>
 						</div>
 					
 					</div>