Crashing when using nsstring to post data - ios

Question

I'm trying to send the device token and device name to my server, although it works with only the token, it crashes if i add the device name.
Is there a better way to do this?
(void)application:(UIApplication*)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)deviceToken
{
NSLog(#"My token is: %#", deviceToken);
NSString* systemName=[[UIDevice currentDevice] name];
NSString *temp = [NSString stringWithFormat:systemName, deviceToken];
NSData *postData = [[NSString stringWithFormat:#"token=%#", temp] dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d",[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:#"http://#############/push/register.php"]]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody:postData];
NSURLConnection *conn = [[NSURLConnection alloc]initWithRequest:request delegate:self];
}
the console outputs
2013-12-31 17:41:59.294 Wellington[31788:60b] My token is: <###### ###### ###### ###### ##### ###### ######>
(lldb)
NEW CODE
-(void)application:(UIApplication*)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)deviceToken
{
NSLog(#"My token is: %#", deviceToken);
NSString* systemName=[[UIDevice currentDevice] name];
*** NSData *postData = [[NSString stringWithFormat:#"token=%#", deviceToken] dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSData *postData2 = [[NSString stringWithFormat:#"token=%#", systemName] dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d",[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:#"http://*********/register.php"]]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody:postData];
[request setHTTPBody:postData2];
NSURLConnection *conn = [[NSURLConnection alloc]initWithRequest:request delegate:self];
}
it is crashing on stared line

Answer 1

Shouldn't you do something like,
NSString *temp = [NSString stringWithFormat:#"%#|%#", systemName, deviceToken];
Pipe delimetered values.
Reason your code isn't working...:
NSString *temp = [NSString stringWithFormat:systemName, deviceToken];
Will give you only systemName variables value. Because systemName variable string doesn't have %#symbol in it to the OS will not add deviceToken value into temp variable.