Append method with AddTop issue

[Sonic3R]

I use C# code to upload nzb to nzbget

using (var client = new WebClient())
{
	client.BaseAddress = "url-with-user-and-password/jsonrpc";

	var nzbName = Path.GetFileName(nzb);
	nzbName = nzbName.Split('{')[0].TrimEnd('-');

	var nzbContentBytes = File.ReadAllBytes(nzb);
	var nzbContent = Convert.ToBase64String(nzbContentBytes);

        // it will be: 
        // {"method":"append","params":["My.nzb","CONTENT OF nzbContent here","",0,False,True,"",0,"'SCORE'",[('*unpack:', 'yes')]]}
	var formattedUploadCmd = uploadCmd.Replace("%NZB_NAME%", nzbName).Replace("%NZB_CONTENT%", nzbContent);

	var response = client.UploadStringTaskAsync(url, "POST", formattedUploadCmd).ConfigureAwait(true).GetAwaiter().GetResult();
}

the error I got is:

{
"version" : "1.1",
"error" : {
"name" : "JSONRPCError",
"code" : 2,
"message" : "Invalid parameter (AddTop)"
}

I tried to add quotes to True/False params, to integer numbers but I got same error

Don't know where is my mistake