table data issue

[cinek]

I'm trying to fill out a table. The descriptions are filled out correctly, but the titles are the same for all sections. I have no idea what's wrong

here's my code:

#import "CourseDirectory.h"

@implementation CourseDirectory
@synthesize courseTable, courseTypes, courseTypeDescription;


// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
    //load data from file
    NSString *path = [[NSBundle mainBundle] pathForResource:@"CourseTypes" ofType:@"plist"];

    //initialize the dictionary
    NSDictionary *dic = [[NSDictionary alloc] initWithContentsOfFile:path];
    
    self.courseTypeDescription = dic;
    
    NSArray *array = [self.courseTypeDescription allKeys];// sortedArrayUsingSelector:@selector(compare:)];
    
    self.courseTypes = array;
    
    [super viewDidLoad];
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    NSString *courseType = [self.courseTypes objectAtIndex:section];
    
    NSArray *courseSection = [self.courseTypeDescription objectForKey:courseType];
    
    return [courseSection count];
    
}

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return [self.courseTypes count];
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"CellIdentifier";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    
    if(cell == nil){
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
        //configure the cell here
        cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    }
    
    //NSString *courseType = [self.courseTypes objectAtIndex:[indexPath section]];
    
    NSString *courseType = [self.courseTypes objectAtIndex:[indexPath section]];
    
    NSArray *courseSection = [self.courseTypeDescription objectForKey:courseType];
    
    cell.textLabel.text = [courseTypes objectAtIndex:[indexPath row]];
    cell.detailTextLabel.text = [courseSection objectAtIndex:[indexPath row]];
    
    return cell;
}

-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
    return nil;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
#warning complete
}

edit: nvm fixed it