diff --git a/scripts/generate_chat_stat_monthly.py b/scripts/generate_chat_stat_monthly.py
index 8c6f86c..602874a 100644
--- a/scripts/generate_chat_stat_monthly.py
+++ b/scripts/generate_chat_stat_monthly.py
@@ -14,7 +14,13 @@ from common.rocketchathelper import getAllChannels, getAllMessages, Connection
 from common.savehelper import save
 from common.charthelper import createElement, getColor, setTsunamyInfo, Tsunami, getTsunamy
 
+begin = datetime.now()
+end = datetime.now()
+
 def main():
+  
+  global begin, end
+  
   rocket = Connection()
   
   labels = [None] * 12
@@ -56,6 +62,8 @@ def main():
     begin = date - monthdelta(12)
     end = begin + monthdelta(1)
 
+    messages = getAllMessages(rocket, channel['_id'], begindate= begin, enddate=date, count= channel['msgs'])
+
     tsunamy = getTsunamy(channel)    
 
     for id in range(0, 12):
@@ -63,11 +71,8 @@ def main():
         uniqueUserGlobal[id] = []
       labels[id] = begin.strftime("%b %Y")
       print(f"\t{labels[id]}")
-      begindate =  begin.isoformat()
-      enddate = end.isoformat()
-
-      resultMess = getAllMessages(rocket, channel['_id'], begindate= begindate, enddate=enddate)
-      resultMess = list(filter(lambda mess: 't' not in mess, resultMess))
+      
+      resultMess = list(filter(lambda mess: begin < datetime.strptime(mess["ts"], "%Y-%m-%dT%H:%M:%S.%fZ") < end, messages))
       length = len(resultMess)
       dataMess.append(length)