HELP!Cant figure out why i get an error!

[Traw2011]

The code to check out what objects are deallocating is giving me fits. i have copied the code straight from the book but i still get an error.
on the line [randomEmployee addAsset:asset];
i line i get the error " no visiblie @interface for 'BNREmployee declares the selector ‘addAsset:’

what the heck did i do wrong. thanks

ps. im runnig xcode 6.1 on yosemite. thanks

here is is the code

//
//  BNREmployee.h
//  BMITime
//
//  Created by Tevin Harris on 10/23/14.
//  Copyright (c) 2014 Tevin Harris. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "BNRPerson.h"
@class BNRAsset;

@interface BNREmployee : BNRPerson

@property (nonatomic) unsigned int employeeID;
@property (nonatomic) NSDate *hireDate;
@property (nonatomic, copy) NSArray *assets;
- (double)yearsOfEmployment;
- (void)addAsset:(BNRAsset *)a;
- (unsigned int)valueOfAssets;

@end

BNREmployee.m

[code]//
// BNREmployee.m
// BMITime
//
// Created by Tevin Harris on 10/23/14.
// Copyright © 2014 Tevin Harris. All rights reserved.
//

#import “BNREmployee.h”
#import “BNRAsset.h”

//class exension
@interface BNREmployee ()

{
NSMutableArray *_assets;
}

@property(nonatomic) unsigned int officeAlarmCode;

@end

@implementation BNREmployee
// Accessors for assets properties

• (void)setAssets:(NSArray *)a
  {
  _assets = [a mutableCopy];
  }

• (NSArray *)assets
  {
  return [_assets copy];
  }

• (void)addAsset:(BNRAsset *)a
  {
  // Is assets nil?
  if (!_assets) {

    // Create the array
    _assets = [[NSMutableArray alloc] init];
  

  }
  [_assets addObject:a];
  }

• (unsigned int)valueOfAssets
  {
  // Sum up the resale value of the assets
  unsigned int sum = 0;
  for (BNRAsset *a in _assets) {
  sum += [a resaleValue];
  }
  return sum;
  }

• (double)yearsOfEmployment
  {
  //do i have a non-nil hire date?
  if (self.hireDate) {

    //NSTimeInterval is the same as double
    NSDate * now = [NSDate date];
    NSTimeInterval secs = [now timeIntervalSinceDate:self.hireDate];
    return secs / 31557600.0; //seconds per year
  

  } else{
  return 0;

  }
  }
  // - (float)bodyMassIndex
  //{
  // float normalBMI = [super bodyMassIndex];
  // return normalBMI * .9;
  //}

• (NSString *)description
  {
  // return [NSString stringWithFormat:@"<Employee %d>", self.employeeID];
  return [NSString stringWithFormat:@"<Employee %u: %u in assets>", self.employeeID, self.valueOfAssets];
  }

• (void)dealloc
  {
  NSLog(@“deallocating %@”, self);
  }
  @end
  [/code]

main.m

[code]//
// main.m
// BMITime
//
// Created by Tevin Harris on 10/23/14.
// Copyright © 2014 Tevin Harris. All rights reserved.
//

#import <Foundation/Foundation.h>
#import “BNREmployee.h”
#import “BNRAsset.h”

int main(int argc, const char * argv[]) {
@autoreleasepool {
/*
//give the instance variables interesting values using setters
[mikey setWeightInKilos:96];
[mikey setHeightInMeters:1.8];

     //log the instance variables using the getters
     float height = [mikey heightInMeters];
     int weight = [mikey weightInKilos];
     
     

  //create an instance of BNREmployee
    
    BNREmployee * mikey = [[BNREmployee alloc] init];
    
    
    //give properties intersting values
    
    mikey.weightInKilos = 96;
    mikey.heightInMeters = 1.8;
    mikey.employeeID = 12;
    mikey.hireDate = [NSDate dateWithNaturalLanguageString:@"Aug 2nd, 2010"];
    
    //log the instance variables using  the getters
    float height = mikey.heightInMeters;
    int weight = mikey.weightInKilos;
    NSLog(@" mikey is %.2f meters tall and weighs %d kilos", height, weight);
    NSDate * date = mikey.hireDate;
    NSLog(@"%@ hired on %@", mikey, date);
    NSLog(@"Employee %u hired on %@", mikey.employeeID, mikey.hireDate);
    
    //log some vales using custom methods
    float bmi = [mikey bodyMassIndex];
    double years = [mikey yearsOfEmployment];
    NSLog(@"BMI  of %.2f has worked with us for %.2f years", bmi,years);

*/
// Create an array of BNREmployee objects
NSMutableArray *employees = [[NSMutableArray alloc] init];

    for (int i = 0; i < 10; i++) {
        // Create an instance of BNREmployee
        BNREmployee *mikey = [[BNREmployee alloc] init];
        
        // Give the instance variables interesting values
        mikey.weightInKilos = 90 + i;
        mikey.heightInMeters = 1.8 - i/10.0;
        mikey.employeeID = i;
        
        // Put the employee in the employees array
        [employees addObject:mikey];
    }
    
    // Create 10 assets
    for (int i = 0; i < 10; i++) {
        // Create an asset
        BNRAsset *asset = [[BNRAsset alloc] init];
        
        // Give it an interesting label
        NSString *currentLabel = [NSString stringWithFormat:@"Laptop %d", i];
        asset.label = currentLabel;
        asset.resaleValue = 350 + i * 17;
        
        // Get a random number between 0 and 9 inclusive
        NSUInteger randomIndex = random() % [employees count];
        
        // Find that employee
        BNREmployee *randomEmployee = [employees objectAtIndex:randomIndex];
        
        // Assign the asset to the employee
        [randomEmployee addAsset:asset]; <--this line gives me a error " no visiblie @interface for 'BNREmployee declares the selector 'addAsset:'
    }
    
    NSLog(@"Employees: %@", employees);
    
    NSLog(@"Giving up ownership of one employee");
    
    [employees removeObjectAtIndex:5];
    
    NSLog(@"Giving up ownership of arrays");
    
    employees = nil;
            
    }
return 0;

}
[/code]