swift - Core Data edit value with multiple entities -

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i new core data , swift, have multiple entity in 1 row like

 let sceneobj = scene(entity: entitydescription!,                                            insertintomanagedobjectcontext: dbhelper .getcontext())                  sceneobj.createdat = string(dictionary!["createdat"]!)                   let appactionsdict = dictionary!["appactions"]! as? nsarray;                  appactionsarray in appactionsdict!{                     let entitydescription1 =                         nsentitydescription.entityforname("appactions",                                                           inmanagedobjectcontext: dbhelper .getcontext())                      let appactionsobj = appactions(entity: entitydescription1!,                                          insertintomanagedobjectcontext: dbhelper .getcontext())                      appactionsobj.action = appactionsarray["action"] as! nsnumber?                      sceneobj .addobject(appactionsobj)                     }

here if see have "scene" entity , "appactions" "appaction" object added "scene" object.

this add part works fine stucked edit part of same.

i have done this

 let fetchedresults = try dbhelper .getcontext().executefetchrequest(req) as! [scene]              if fetchedresults.count > 0 {                 in 0 ..< fetchedresults.count {                       let managedobject = fetchedresults[i]                      managedobject.setvalue( string(dictionary!["createdat"]!), forkey: "createdat") } }

and don't how edit "appactions" in this.

please guide me how edit this.

thanks in advance


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