I simply want to change a variable of an object from another class. I can compile without a problem, but my variable always is set to 'null'. I used the following code:

Object.h:

@interface Object : NSObject {
    //...
    NSString *color;
    //...
}

@property(nonatomic, retain) NSString* color;

+ (id)Object;
- (void)setColor:(NSString*)col;
- (NSString*)getColor;
@end

Object.m:

+(id)Object{
    return [[[Object alloc] init] autorelease];
}

- (void)setColor:(NSString*)col {
    self.color = col;
}

- (NSString*)getColor {
    return self.color;
}

MyViewController.h

#import "Object.h"

@interface ClassesTestViewController : UIViewController {
    Object *myObject;
    UILabel *label1;
}

@property UILabel *label1;
@property (assign) Object *myObject;
@end

MyViewController.m:

#import "Object.h"
@implementation MyViewController
@synthesize myObject;

- (void)viewDidLoad {
    [myObject setColor:@"red"];
    NSLog(@"Color = %@", [myObject getColor]);
    [super viewDidLoad];
}

The NSLog message is always Color = (null)

I tried many different ways to solve this problem, but no success. Any help would be appreciated.