diff --git a/rtc_plugins.cpp b/rtc_plugins.cpp
index 2006cc1..b18e7b2 100644
--- a/rtc_plugins.cpp
+++ b/rtc_plugins.cpp
@@ -13,11 +13,7 @@ void** get_numpy_api() {
 namespace py = boost::python;
 
 int init(const char* selfUserId, const char* selfDisplayName, const char* selfRoomId, boost::python::object callback) {
-    if (!PyArray_API) {
-        std::cout << "PyArray_API is null in outer init" << std::endl;
-    } else {
-        std::cout << "PyArray_API is not null in outer init" << std::endl;
-    }
+
     RTCContext::instance().setPyCallback(callback);
     bool res = RTCContext::instance().init(selfUserId, selfDisplayName, selfRoomId);
     if (res) {
@@ -27,11 +23,7 @@ int init(const char* selfUserId, const char* selfDisplayName, const char* selfRo
     }
 }
 int initRecv(const char* destRoomId, const char* srcUserId, const int16_t destChannelIndex) {
-    if (!PyArray_API) {
-        std::cout << "PyArray_API is null in outer initRecv" << std::endl;
-    } else {
-        std::cout << "PyArray_API is not null in outer initRecv" << std::endl;
-    }
+
     bool res = RTCContext::instance().initRecv(destRoomId, srcUserId, destChannelIndex);
     if (res) {
         return 0;
@@ -39,8 +31,8 @@ int initRecv(const char* destRoomId, const char* srcUserId, const int16_t destCh
         return -1;
     }
 }
-int initSend(const char* srcRoomId, const char* destRoomId, const int16_t destChannelIndex) {
-    bool res = RTCContext::instance().initSend(srcRoomId, destRoomId, destChannelIndex);
+int initSend(const char* srcRoomId, const char* destRoomId, const int16_t destChannelIndex, const uint8_t channelNum) {
+    bool res = RTCContext::instance().initSend(srcRoomId, destRoomId, destChannelIndex, channelNum);
     if (res) {
         return 0;
     } else {