Go RPC do not pass the args

Getting Help
1

I am doing MIT 6.824, but meet some problems:

I pass args : &{1 2 0 -1} ,reply := AppendEntriesReply{} to example RequestVote RPC handler.

func (rf *Raft) RequestVote(args *RequestVoteArgs, reply *RequestVoteReply) {
	fmt.Println(args) //  it is nil! 
	if args.term > rf.currentTerm {
		rf.currentTerm = args.term
		rf.state = Follower
	} 

	if args.term <= rf.currentTerm {
		reply.Granted = false
		reply.Term = rf.currentTerm
	}
	if args.lastLogIndex >= len(rf.log) && (rf.votedFor == -1 || rf.votedFor == args.candidateId) {
		reply.Granted = true
	} else {
		reply.Granted = false
	}
	reply.Term = rf.currentTerm
	return
}

func (rf *Raft) sendRequestVote(server int, args *RequestVoteArgs, reply *RequestVoteReply) bool {
	fmt.Println(args)
	ok := rf.peers[server].Call("Raft.RequestVote", args, reply)
	return ok
}

My RPC call do not pass the args. Why, but I am using the basic lib.

2

I know, it is because the args need a capital letter at the beginning!

3

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