ios - How to set a NSData object to PFObject? -

i added column location of object type in _user class. i'm assuming means nsdata type in ios. not sure what's correct way of doing this. i'm getting error when assigning nsdata self.location. appreciated.

error domain=parse code=111 "invalid type key location, expected map, got bytes" userinfo=0x1740f9a00 {code=111, originalerror=error domain=nsurlerrordomain code=-1011 "the operation couldn’t completed. (nsurlerrordomain error -1011.)", temporary=0, error=invalid type key location, expected map, got bytes, nslocalizeddescription=invalid type key location, expected map, got bytes}

byfuser.h

#import <parse/parse.h>  @interface byfuser : pfuser <pfsubclassing>  @property (nonatomic, strong) nsdata *location;  @property (nonatomic, strong) cllocation *cllocation;  @end 

byfuser.m

@implementation byfuser  @dynamic location;  + (void)load {     [byfuser registersubclass]; }  - (void)setcllocation:(cllocation *)cllocation {     if ([cllocation iskindofclass:[cllocation class]]) {         self.location = [nskeyedarchiver archiveddatawithrootobject:cllocation];     } }  - (cllocation *)cllocation {     if ([self.location iskindofclass:[nsdata class]]) {         return [nskeyedunarchiver unarchiveobjectwithdata:self.location];     }     return nil; }  @end 

make column geopoint type , access ios using pfgeopoint class. pfgeopoint can instantiated cllocation.