Error in calling xml parser method

I am using retailligence barcode api and using nsxml parser method to parse the response below is the code but it didn't give call to parsing method. What's wrong there. Please help

{   NSString *myxmlstr = [NSString stringWithFormat:@"http://apitest.retailigence.com/v1.2/products?apikey=rMMzX5IDYVmTjQ3A7D9sZXukjKiZVmdD&barcode=%@&latitude=37.439097&longitude=-122.175806",brcode];

NSLog(@"my myxmlsstr is %@",myxmlstr);

dataselected = NO;

NSURL * xmlURL = [NSURL fileURLWithPath:myxmlstr];







myParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL];







myParser.delegate = self;



BOOL success = [myParser parse];

if(success){

    NSLog(@"Properly done ");

}

else{

    NSLog(@"not done");

}

}

Thanks in advance.