Unable to load different PDF files in a table cell
===

I'm doing an iPhone application which loads 14 different PDF files upon clicking on their individual table cells. Two ViewController have been created and a UIWebview is used to load the PDF files. 
My problem is that upon clicking on every table cell leads me to the same PDF file. Below is my codes. Please help!

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    #import "IssueDetailViewController.h"
    #import "ItemsViewController.h"
    #import "Issues.h"
    #import "IssueCell.h"

    @interface IssueDetailViewController ()

    @end

    @implementation IssueDetailViewController
    @synthesize issueItem;


    - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
    {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
    // Custom initialization
    }
    return self;
    }

    -(void)viewDidLoad
    {
    [super viewDidLoad];
    NSString *path = [[NSBundle mainBundle] pathForResource:@"network_38" ofType:@"pdf"];
    NSURL *url = [NSURL fileURLWithPath:path];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [webview loadRequest:request];
    webview.autoresizingMask=(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight); 
    [webview setScalesPageToFit:YES];

    }



    - (void)viewDidUnload
    {
    IssueView = nil;
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
    }

    - (BOOL)shouldAutorotateToInterfaceOrientation:       (UIInterfaceOrientation)interfaceOrientation

    {
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
    }

    -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
    {
    IssueDetailViewController *detailViewController = [[IssueDetailViewController alloc] init];



    [[self navigationController] pushViewController:detailViewController animated:YES];
    }

    -(void) viewWIllAppear:(BOOL)animated
    {
    [super viewWillAppear:animated];

    }


    -(void) setIssueItem:(Issues *)i
    {
    issueItem = i;
    [[self navigationItem] setTitle:[issueItem issueName]];
    }




    @end