Data from API call and jsonobject is not carrying over when called - ios

Question

I'm calling this API and it's jsonobject in a segue, and trying to push it into a view controller, but it's not carrying the data. In my Below code it prints just fine in the call, but the other two prints come up with null.
Is there something I'm missing to make the data persistent?
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:#"showChangeDetail"]) {
NSIndexPath *indexPath = nil;
BNRItem *item = nil;
//BDItemChangeDetailAPI *itemAPI = nil;
NSArray *items = [[BNRItemStore sharedStore] allItems];
if (self.searchDisplayController.active) {
indexPath = [self.searchDisplayController.searchResultsTableView indexPathForSelectedRow];
item = [searchResults objectAtIndex:indexPath.row];
} else {
indexPath = [self.tableView indexPathForSelectedRow];
//item = items[indexPath.row];
item = [items objectAtIndex:indexPath.row];
}
NSLog(#"111111%#", self.APIItem);
[self fetchFeedAPIChangeDetail];
NSLog(#"222222%#", self.APIItem);
BDChangeApproveController *destViewController = segue.destinationViewController;
destViewController.itemAPI = self.APIItem;
}
}
- (void)fetchFeedAPIChangeDetail
{
//NSString *changeorder = changeOrder;
// NSString *requestString = [#"http://URL.com];
NSString *requestString = #"http://URL.com";
NSURL *url = [NSURL URLWithString:requestString];
NSURLRequest *req = [NSURLRequest requestWithURL:url];
NSURLSessionDataTask *dataTask =
[self.session dataTaskWithRequest:req
completionHandler:
^(NSData *data, NSURLResponse *response, NSError *error){
NSDictionary *jsonObject1 = [NSJSONSerialization JSONObjectWithData:data
options:0
error:nil];
//NSLog(#"%#", jsonObject1);
self.APIItem = jsonObject1[#"CoDetail"];
NSLog(#"%#", self.APIItem);
}];
[dataTask resume];
}
- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// show loading indicator
__weak typeof(self) weakSelf = self;
[[BNRItemStore sharedStore] fetchFeedAPIChangeDetail:^(NSArray *array, NSError *err)
{
[weakSelf performSegueWithIdentifier:#"showChangeDetail" sender:weakSelf];
// hide loading indicator
}];
}