diff --git a/examples/arduino/EspLinkSample/EspLinkSample.ino b/examples/arduino/EspLinkSample/EspLinkSample.ino
index 937cc07..ab672b0 100644
--- a/examples/arduino/EspLinkSample/EspLinkSample.ino
+++ b/examples/arduino/EspLinkSample/EspLinkSample.ino
@@ -62,8 +62,16 @@ void ledHtmlCallback(WebServerCommand command, char * data, int dataLen)
         next_ts = millis() + elapse;
       }
       break;
+    case SET_FIELD:
+      if( strcmp_P(data, PSTR("frequency") ) == 0 )
+      {
+        frequency = webServer.getArgInt();
+        elapse = 1000 / frequency;
+      }
+      break;
     case LOAD:
-      webServer.setArgNum(1);
+      webServer.setArgNum(2);
+      webServer.setArgInt("frequency", frequency);
     case REFRESH:
       if( command == REFRESH )
         webServer.setArgNum(1);
@@ -79,103 +87,3 @@ void ledHtmlCallback(WebServerCommand command, char * data, int dataLen)
 }
 
 
-/*
-#include "EspLink.h"
-
-
-void packetReceived(CmdRequest *req);
-
-EspLink espLink(Serial, packetReceived);
-
-void packetReceived(CmdRequest *req)
-{
-  Serial.println("\nReceived\n");
-  uint16_t shrt, port;
-  espLink.cmdPopArg(req, &shrt, 2);
-  RequestReason reason = (RequestReason)shrt;
-  Serial.print("Reason: ");
-  Serial.println(reason);
-
-  uint8_t ip[4];
-  espLink.cmdPopArg(req, &ip, 4);
-  Serial.print("IP: ");
-  for(int i=0; i < 4; i++)
-  {
-    Serial.print(ip[i], DEC);
-    if( i != 3 )
-      Serial.print(".");
-  }
-  Serial.println();
-  
-  espLink.cmdPopArg(req, &port, 2);
-  Serial.print("Port: ");
-  Serial.println(port);
-
-  {
-    uint16_t len = espLink.cmdArgLen(req);
-    char bf[len+1];
-    bf[len] = 0;
-    espLink.cmdPopArg(req, bf, len);
-    Serial.print("Url: ");
-    Serial.println(bf);
-  }
-
-  switch( reason )
-  {
-    case BUTTON:
-      {
-        uint16_t len = espLink.cmdArgLen(req);
-        char bf[len+1];
-        bf[len] = 0;
-        espLink.cmdPopArg(req, bf, len);
-        Serial.print("Arg: ");
-        Serial.println(bf);
-      }
-      break;
-    case SUBMIT:
-      {
-          int arg = 4;
-          while( espLink.cmdGetArgc(req) > arg )
-          {
-            arg++;
-
-            uint16_t len = espLink.cmdArgLen(req);
-            char bf[len+1];
-            bf[len] = 0;
-            espLink.cmdPopArg(req, bf, len);
-
-            Serial.print(bf + 1);
-            Serial.print(" -> ");
-            Serial.println(bf + strlen(bf+1) + 2);
-          }
-          return;
-      }
-  }
-
-  espLink.sendPacketStart(CMD_WEB_JSON_DATA, 100, 3);
-  espLink.sendPacketArg(4, ip);
-  espLink.sendPacketArg(2, (uint8_t *)&port);
-  
-  char outBuf[30];
-  outBuf[0] = 0;
-  strcpy(outBuf+1, "last_name");
-  strcpy(outBuf+11,"helloka");
-  espLink.sendPacketArg(19, (uint8_t *)outBuf);
-  
-  espLink.sendPacketEnd();
-  
-}
-
-void setup() {
-  Serial.begin(57600);
-
-  delay(10);
-  espLink.sendPacketStart(CMD_CB_ADD, 100, 1);
-  espLink.sendPacketArg(5, (uint8_t *)"webCb");
-  espLink.sendPacketEnd();
-}
-
-void loop() {
-  espLink.readLoop();
-}
-*/
diff --git a/examples/arduino/EspLinkSample/WebServer.cpp b/examples/arduino/EspLinkSample/WebServer.cpp
index df7e50f..5e100d5 100644
--- a/examples/arduino/EspLinkSample/WebServer.cpp
+++ b/examples/arduino/EspLinkSample/WebServer.cpp
@@ -46,7 +46,21 @@ void WebServer::invokeMethod(RequestReason reason, WebMethod * method, CmdReques
       break;
     case WS_SUBMIT:
       {
-        /* TODO: iterate through fields */
+        int arg_len = espLink.cmdGetArgc( req );
+        int cnt = 4;
+
+        while( cnt < arg_len )
+        {
+          uint16_t len = espLink.cmdArgLen(req);
+          char bf[len+1];
+          bf[len] = 0;
+          espLink.cmdPopArg(req, bf, len);
+
+          value_ptr = bf + 2 + strlen(bf+1);
+          method->callback(SET_FIELD, bf+1, strlen(bf+1));
+          
+          cnt++;
+        }
       }
       return;
     default:
@@ -148,3 +162,23 @@ void WebServer::setArgStringP(const char * name, const char * value)
   args_to_send--;
 }
 
+void WebServer::setArgInt(const char * name, int32_t value)
+{
+  if( args_to_send <= 0 )
+    return;
+    
+  uint8_t nlen = strlen(name);
+  char buf[nlen + 7];
+  buf[0] = WEB_INTEGER;
+  strcpy(buf+1, name);
+  memcpy(buf+2+nlen, &value, 4);
+  espLink.sendPacketArg(nlen+6, (uint8_t *)buf);
+  
+  args_to_send--;
+}
+
+int32_t WebServer::getArgInt()
+{
+  return (int32_t)atol(value_ptr);
+}
+
diff --git a/examples/arduino/EspLinkSample/WebServer.h b/examples/arduino/EspLinkSample/WebServer.h
index 0914b50..6d70817 100644
--- a/examples/arduino/EspLinkSample/WebServer.h
+++ b/examples/arduino/EspLinkSample/WebServer.h
@@ -53,6 +53,8 @@ class WebServer
     uint16_t                  remote_port;
 
     int16_t                   args_to_send;
+
+    char *                    value_ptr;
     
   protected:
     EspLink espLink;
@@ -70,8 +72,11 @@ class WebServer
     uint16_t           getRemotePort() { return remote_port; }
 
     void               setArgNum(uint8_t num);
+    void               setArgInt(const char * name, int32_t value);
     void               setArgString(const char * name, const char * value);
     void               setArgStringP(const char * name, const char * value);
+
+    int32_t            getArgInt();
 };
 
 #endif /* WEB_SERVER_H */
diff --git a/web-server/web-server.c b/web-server/web-server.c
index f6a8861..330c436 100644
--- a/web-server/web-server.c
+++ b/web-server/web-server.c
@@ -263,7 +263,7 @@ int ICACHE_FLASH_ATTR WEB_CgiJsonHook(HttpdConnData *connData)
 		int c = 2;
 		while( c++ < cmdGetArgc(req) )
 		{
-			if( c < 3 ) // skip the first argument
+			if( c > 3 ) // skip the first argument
 				jsonBuf[jsonPtr++] = ',';
 			
 			int len = cmdArgLen(req);