plot (What to fix)?

i'm making iphone app that use Core-Plot chart. The app have "SavolaViewController as a main class that include a button and when button clicked it's GoTo to another class named "ChartViewController" by this code

ChartViewControllerVar = [[ChartViewController alloc]initWithNibName:@"ChartViewController" bundle:nil];
[self presentModalViewController:ChartViewControllerVar animated:YES];

I have read about core-plot for 4-6 hours and i have not understand any of the tutorials(it's not understandable) [({"Please dont answer with tutorial link"})]

I have coped the Core-Plot code from the example in Core-Plot .zip file(you'll find the code in the link bellow).

and i have this msg in the console

2012-07-15 16:38:31.325 Savola[13105:f803] * Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[UIViewController _loadViewFromNibNamed:bundle:] loaded the "ChartViewController" nib but the view outlet was not set.' * First throw call stack: (0x140a022 0x19c2cd6 0x13b2a48 0x13b29b9 0x4102dd 0x410779 0x41099b 0x4199bc 0x414818 0x630565 0x417857 0x4179bc 0xca94792 0x4179fc 0x9a4f 0x3da5c5 0x3da7fa 0xc6f85d 0x13de936 0x13de3d7 0x1341790 0x1340d84 0x1340c9b 0x228f7d8 0x228f88a 0x349626 0x8c0a 0x2c55) terminate called throwing an exception(lldb)

What i want(If you can)

Fix the code to run in my app.

What does i need to but in the .xib file.

delete the codes unneeded.

The code

---

This has nothing to do with Core Plot. You have an IBOutlet in your .xib that's not connected properly.

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