accessing the setMethod of a #property in ios - ios

Question

after many hour of tutorials and googling i knew that when we define a property inside the header file the compiler automatically generate the setters and getters here is an example:
"example.h"
#property(strong,nonatomic) NSNumber *test;
example.m
[self.test setTest [#"3"]];
so what i want is to access this method to check the method declaration and here is the reason that i want
Full Scenario
#interface exampleController ()
{
int example;
}
// here is a instance variable used to save a value while the app running i am getting this value from a dictionary and then save the value of the example variable to the core data
here is the entity class
exampleEntity.h
#property(strong,nonatomic) NSNumber *example;
exampleEntity.m
#dynamic example;
// since the instance variable is int we need to cast it to NSNumber so i follow this link
[entry setExample : [NSNumber numberWithInt:example]];
Finally after running this code i go into this exception:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException'
Full Code
#import "viewController.h"
#interface viewController ()
{
int example;
}
- (void)viewDidLoad {
gettingTheExampleValueFromDictionary();
}
-(void)gettingTheExampleValueFromDictionary()
{
NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:requestHandler options:0 error:&jsonParsingError];
example = [[dictionary objectForKey:#"exampleId"] intValue];
}
- (IBAction)doneButton:(id)sender {
[self insertDataToCoreData];
[self dismissSelf];
}
-(void)insertDataToCoreData {
CoreData *coreDataStack = [CoreData defaultStack];
ExampleEntity *entry = [NSEntityDescription insertNewObjectForEntityForName:
#"ExampleEntity" inManagedObjectContext:coreDataStack.managedObjectContext];
[entry setExample :[NSNumber numberWithInt:example]];
// here we go into the error //
[coreDataStack saveContext];
}
#end
// and if you ask me for entity class here is:
#import <Foundation/Foundation.h>
#interface ReservationEntity : NSObject
#property (nonatomic,strong) NSNumber *example;
#end
#import "exampleEntity.h"
#implementation exampleEntity
#dynamic example;
#end
// and if you ask me for core data here is the pic needed //
// the configuration of xcdatamodel

Answer 1

In your case you should change:
#dynamic example;
to
#synthesize example;
or just delete the line of code #dynamic example.
Because #synthesize generates the getter&setter for the property, while #dynamic means the getter&setter are created in runtime(e.g. NSManagedObject's subclasses)