diff --git a/bin/WebStats.py b/bin/WebStats.py
index 20c1f489..d8ff0876 100755
--- a/bin/WebStats.py
+++ b/bin/WebStats.py
@@ -66,25 +66,7 @@ def compute_progression(server, field_name, num_day, url_parsed):
         # filter
         if (keyword_total_sum > threshold_total_sum) and (keyword_increase > threshold_increase):
             
-            if server.sismember(redis_progression_name_set, keyword): #if keyword is in the set
-                server.hset(redis_progression_name, keyword, keyword_increase) #update its value
-
-            elif (server.scard(redis_progression_name_set) < max_set_cardinality):
-                server.sadd(redis_progression_name_set, keyword)
-
-            else: #not in the set
-                #Check value for all members
-                member_set = []
-                for keyw in server.smembers(redis_progression_name_set):
-                    member_set.append((keyw, int(server.hget(redis_progression_name, keyw))))
-                member_set.sort(key=lambda tup: tup[1])
-                if member_set[0][1] < keyword_increase:
-                    print 'removing', member_set[0][0] + '('+str(member_set[0][1])+')', 'and adding', keyword, str(keyword_increase)
-                    #remove min from set and add the new one
-                    server.srem(redis_progression_name_set, member_set[0][0])
-                    server.sadd(redis_progression_name_set, keyword)
-                    server.hdel(redis_progression_name, member_set[0][0])
-                    server.hset(redis_progression_name, keyword, keyword_increase)
+            server.zadd("z_top_progression_"+field_name, float(keyword_increase), keyword)
 
 
 if __name__ == '__main__':
diff --git a/var/www/Flask_server.py b/var/www/Flask_server.py
index 14bb8474..925ed369 100755
--- a/var/www/Flask_server.py
+++ b/var/www/Flask_server.py
@@ -160,6 +160,7 @@ def showpaste(content_range):
     p_lineinfo = paste.get_lines_info()
     p_content = paste.get_p_content().decode('utf-8', 'ignore')
     p_duplicate_full_list = parseStringToList2(paste._get_p_duplicate())
+    p_duplicate_full_list = json.load(paste._get_p_duplicate())
     p_duplicate_list = []
     p_simil_list = []
     p_hashtype_list = []
@@ -290,19 +291,9 @@ def progressionCharts():
         return jsonify(bar_values)
 
     else:
-        redis_progression_name = 'top_progression_'+trending_name
-        redis_progression_name_set = 'top_progression_'+trending_name+'_set'
-
-        # Iterate over element in top_x_set and retreive their value
-        member_set = []
-        for keyw in r_serv_charts.smembers(redis_progression_name_set):
-            keyw_value = r_serv_charts.hget(redis_progression_name, keyw)
-            keyw_value = keyw_value if keyw_value is not None else 0
-            member_set.append((keyw, int(keyw_value)))
-        member_set.sort(key=lambda tup: tup[1], reverse=True)
-        if len(member_set) == 0:
-            member_set.append(("No relevant data", int(100)))
-        return jsonify(member_set)
+        redis_progression_name = "z_top_progression_" + trending_name
+        keyw_value = r_serv_charts.zrevrangebyscore(redis_progression_name, '+inf', '-inf', withscores=True, start=0, num=10)
+        return jsonify(keyw_value)
 
 @app.route("/_moduleCharts", methods=['GET'])
 def modulesCharts():