How to send Chat Message using Zoom API in the Zoom Meeting Room ?

Meeting SDK Type and Version : zoom-sdk-android-6.0.2.21328
Description :
I want to send Chat Message to All in the Zoom Meeting Room.
Using the below code, Any other receives the below Chat Message in the Zoom Meeting Room.
Only my app receives the Chat Message in the (onChatMessageReceived).
Any expert can help this ?

        ChatMessageBuilder m_chat = new ChatMessageBuilder();
        m_chat.setContent("test");
        m_chat.setReceiver(0);
        m_chat.setThreadId(MsgThreadID);
        m_chat.setMessageType(ZoomSDKChatMessageType_To_All);
        MobileRTCSDKError sendResult = mInMeetingService.getInMeetingChatController().sendChatMsgTo(m_chat.build());

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