trying to load a single field into an array and then loading that in a picker. I think its in the creation of the array that I have a problem.

This is my code:

```
NSFetchRequest *request = [[NSFetchRequest alloc] init];
[request setEntity:entityDescr];
[request setPropertiesToFetch:[NSArray arrayWithObject:@"name"]];

NSError *error;
NSArray *array = [managedObjectContext executeFetchRequest:request error:&error];
self.pickerData = array;

```

The error I get is this:

> 
> Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSManagedObject isEqualToString:]: unrecognized selector sent to instance 0x7bb8100'
> 
> 
> 

Any help would be appreciated...