Documnetation for tibrv.jar

I am trying to add a name and a field ID to a TibrvMsg.  How do I get this done?
Is there any documentation for this class/jar ?

I need the TIBCO payload to look like the following:
eg: {MsgTyp[1000]="REG" Symbol[1001]="MSFT"  User[1006]="CE" SymTyp[1009]="D"}


Following is the code I am trying, but without Javadocs I am shooting in the dark.

msg.setSendSubject("STAGE.PS.REQ");
//msg.add(arg0, arg1, arg2, arg3)
msg.add("MsgTyp","REG",(short)1000);
msg.add("User","Flrview",(short)1006);
msg.add(" SymTyp","D",(short)1009);
//msg.add("1010","Y");
msg.setReplySubject("STAGE.FV.MKTDATA");
msg.add(" Symbol",symbol,(short)1009);
transport.send(msg);

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