How to Create SOAP POST Request using AFNetworking 2.0

Question

This is my first time to make a SOAP Request using AFNetworking 2.0 I don't know what the problem is but I really couldn't make a correct web service call.

Using SOAP UI, this is the Request Format

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tem="http://tempuri.org/">
   <soapenv:Header>
      <tem:Username>myHeaderUserName</tem:Username>
      <tem:Password>myHeaderHashedPassword</tem:Password>
   </soapenv:Header>
   <soapenv:Body>
      <tem:GetDailyTaskLogRequest>
         <tem:Day>7/23/2014</tem:Day>
         <tem:DeliverableID>0</tem:DeliverableID>
         <tem:GetFirstTimeIn>false</tem:GetFirstTimeIn>
         <tem:MileStoneID>0</tem:MileStoneID>
         <tem:OtherFilterType></tem:OtherFilterType>
         <tem:OtherFilterValue>0</tem:OtherFilterValue>
         <tem:ProjectCode></tem:ProjectCode>
         <tem:SubProjectID>0</tem:SubProjectID>
         <tem:TaskType>Active</tem:TaskType>
         <tem:UserName>myBodyUsername</tem:UserName>
      </tem:GetDailyTaskLogRequest>
   </soapenv:Body>
</soapenv:Envelope>

So what I did, inside the method for web service call in my iOS App is

 NSString *soapMessage = [NSString stringWithFormat:@"<?xml version=\"1.0\" encoding=\"utf-8\"?>"
                             "soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:tem=\"http://tempuri.org/\">"
                             "<soap:Body>"
                             "<tem:GetDailyTaskLogRequest>"

                             "<tem:Day>7/23/2014</tem:Day>"

                             "<tem:DeliverableID>0</tem:DeliverableID>"

                             "<tem:GetFirstTimeIn>false</tem:GetFirstTimeIn>"

                             "<tem:MileStoneID>0</tem:MileStoneID>"

                             "<tem:OtherFilterType></tem:OtherFilterType>"

                             "<tem:OtherFilterValue>0</tem:OtherFilterValue>"

                             "<tem:ProjectCode></tem:ProjectCode>"

                             "<tem:SubProjectID>0</tem:SubProjectID>"

                             "<tem:TaskType>Active</tem:TaskType>"

                             "<tem:UserName>myUserName</tem:UserName>"
                             "</tem:GetDailyTaskLogRequest>"
                             "</soap:Body>"
                             "</soap:Envelope>"];

NSURL *url = [NSURL URLWithString:];
    NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
        [theRequest addValue: @"myHeaderUserName" forHTTPHeaderField:@"Username"];
        [theRequest addValue: @"myHeaderHashedPassword" forHTTPHeaderField:@"Password"];
        [theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];

    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    manager.responseSerializer = [AFXMLParserResponseSerializer serializer]; // if response XML format
    [manager POST:@"" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

        NSLog(@"SUCCESS RESPONSE: %@", responseObject);
        [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

        NSLog(@"ERROR RESPONSE: %@", error);
        [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
    }];

Actually, I think my problem really here is how to format the correct Soap Request that will access and supply the required parameters, which are: I should have pass valid UserName and Password on the Header of the Request, also, I should have pass valid parameter values (Day, DeliverableID, GetFirstTimeIn, etc...) within within the Soap Body.

What am I doing wrong? Because when I run this, I;m getting an error response:

ERROR RESPONSE: Error Domain=com.alamofire.error.serialization.response Code=-1011 "Request failed: bad request (400)" UserInfo=0x1094a91f0 {com.alamofire.serialization.response.error.response=<NSHTTPURLResponse: 0x10940d620> { URL: myURLString } { status code: 400, headers {
    "Cache-Control" = private;
    "Content-Length" = 0;
    Date = "Thu, 24 Jul 2014 07:42:48 GMT";
    Server = "Microsoft-IIS/6.0";
    "X-AspNet-Version" = "4.0.30319";
    "X-Powered-By" = "ASP.NET";
} }, NSLocalizedDescription=Request failed: bad request (400), NSErrorFailingURLKey=myURLString}

(Note: I edited the error response, just hide my actual urlString with the myURLString var)