This is my .h file:

```
@interface test1ViewController : UIViewController{}

    -(void)function1:(NSString *)param1:(NSString *)param2 ;
@end

```

Here is my .m file:

```
- (void)viewDidLoad{
    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    [self function1:@"333" param2:@"sadfas"];
}

-(void)function1:(NSString *)param1:(NSString *)param2 { }

```

This line of code gives me an error, stating: **no visible @interface .... declares the selector 'function1:param2**:

`[self function1:@"333" param2:@"sadfas" ];` 

I tried to modify this a bit, but could not get it to work. How do I fix this