osx - Restart Dock from app -

i have app needs restart dock application. have tried both apple script:

var errordict: nsdictionary? = nil let applescript = nsapplescript(source: "tell application \"dock\" quit") var error = applescript?.executeandreturnerror(&errordict)  if let errordict = errordict {     println("an error occured: \(errordict)") } 

... , nstask:

let task = nstask() task.launchpath = "/usr/bin/killall" task.arguments = ["dock"] task.launch() 

... , nstask:

func restartfinder () {     let task = nstask()     task.launchpath = "/bin/bash"     task.arguments = ["killall dock"]     task.launch() } 

however, seems app not allowed restart it. i'd release app appstore, how can restart dock?

error when using apple script:

an error occured: {     nsapplescripterrorappname = dock;     nsapplescripterrorbriefmessage = "application isn\u2019t running.";     nsapplescripterrormessage = "dock got error: application isn\u2019t running.";     nsapplescripterrornumber = "-600";     nsapplescripterrorrange = "nsrange: {27, 4}"; } 

error when using nstask:

killall: warning: kill -term 255: operation not permitted 

update
have tried stprivilegedtask, didn't work me either. neither did auth window.

i try using applescript, instead this:

var errordict: nsdictionary? = nil let applescript = nsapplescript(source: "do shell script \"killall dock\" administrator " + "privileges") var error = applescript?.executeandreturnerror(&errordict)  if let errordict = errordict {     println("an error occured: \(errordict)") } 

this way, executes shell script(as if through terminal) admin privileges. problem since task done system or user, requires type in admin password.