Setting Property is Case Insensitive in Objective-C

case.m

#import <Foundation/Foundation.h>

@interface A : NSObject
{
  NSString *lowercaseString;
}

@property (strong) NSString *lowercaseString;
@end

@implementation A
@synthesize lowercaseString;

- (id) init
{
    self = [super init];
    if (self) {
        self.LowercaseString = @"Yay"; // use upper case in setter => ok
        NSLog(@"value = %@", self.lowercaseString); // use lower case in getter => ok
        // NSLog(@"value = %@", self.LowercaseString); // use upper case in getter => fail
    }
    return self;
}
@end

int main(int argc, char **argv)
{
    A *a = [A new]; // will show "Yay"
}