diff --git a/schainpy/model/graphics/jroplot_base.py b/schainpy/model/graphics/jroplot_base.py
index 400a6e8..7943177 100644
--- a/schainpy/model/graphics/jroplot_base.py
+++ b/schainpy/model/graphics/jroplot_base.py
@@ -5,6 +5,7 @@ import zmq
 import time
 import numpy
 import datetime
+from queue import Queue
 from functools import wraps
 from threading import Thread
 import matplotlib
@@ -163,6 +164,7 @@ class Plot(Operation):
         self.sender_time = 0
         self.data = None
         self.firsttime = True
+        self.sender_queue = Queue(maxsize=10)
         self.plots_adjust = {'left': 0.125, 'right': 0.9, 'bottom': 0.15, 'top': 0.9, 'wspace': 0.2, 'hspace': 0.2}
 
     def __fmtTime(self, x, pos):
@@ -570,42 +572,41 @@ class Plot(Operation):
 
         self.sender_time = self.data.tm
         
-        attrs = ['titles', 'zmin', 'zmax']
+        attrs = ['titles', 'zmin', 'zmax', 'colormap']
         for attr in attrs:
-            self.data.meta[attr] = getattr(self, attr)
+            value = getattr(self, attr)
+            if value is not None:
+                self.data.meta[attr] = getattr(self, attr)
         self.data.meta['interval'] = int(interval)
-        retries = 2
+        msg = self.data.jsonify(self.plot_name, self.plot_type)
+        self.sender_queue.put(msg)
+        
         while True:
-            self.socket.send_string(self.data.jsonify(self.plot_name, self.plot_type))
+            if self.sender_queue.empty():
+                break
+            self.socket.send_string(self.sender_queue.get())
             socks = dict(self.poll.poll(5000))
             if socks.get(self.socket) == zmq.POLLIN:
                 reply = self.socket.recv_string()
                 if reply == 'ok':
                     log.log("Response from server ok", self.name)
-                    break
+                    time.sleep(0.1)
+                    continue
                 else:
                     log.warning(
                         "Malformed reply from server: {}".format(reply), self.name)
-
             else:
                 log.warning(
                     "No response from server, retrying...", self.name)
+                self.sender_queue.put(msg)
             self.socket.setsockopt(zmq.LINGER, 0)
             self.socket.close()
             self.poll.unregister(self.socket)
-            retries -= 1
-            if retries == 0:
-                log.error(
-                    "Server seems to be offline, abandoning", self.name)
-                self.socket = self.context.socket(zmq.REQ)
-                self.socket.connect(self.plot_server)
-                self.poll.register(self.socket, zmq.POLLIN)
-                time.sleep(1)
-                break
+            time.sleep(0.1)
             self.socket = self.context.socket(zmq.REQ)
             self.socket.connect(self.plot_server)
             self.poll.register(self.socket, zmq.POLLIN)
-            time.sleep(0.5)
+            break
 
     def setup(self):
         '''