PLEASE HELP , try to hang up an outgoing call

Hi
I found code that can trace a dialing status .
I try to use it in a very simple and primitive way :
I want to hang up the call when status changes to dialing.
what actually happens is that when I dial a number and the app is in the background , I get a message that my app is closed , and the call is made (not hung up).
so the dialing status does activate the RunL() method , but the app falls.

please advise , what should I change or add ?

I put the code below , I think that the most relevant method here is the RunL() ...

Thanks in advance , TE

CActiveClass* CActiveClass::NewL()
{
	CActiveClass* self = new (ELeave) CActiveClass();
	CleanupStack::PushL(self);
	self->ConstructL();
	CleanupStack::Pop(self);
	return self;
}
CActiveClass::CActiveClass()
: CActive(0){}
void CActiveClass::ConstructL()
{
	iEnv = CEikonEnv::Static();
	CActiveScheduler::Add(this); 
	StartObserver();
}
CActiveClass::~CActiveClass()
{
	if (IsActive()) 
	{ 
		Cancel(); 
	} 
	else 
	{ 
		ReleasePhone(); 
	} 
}
void CActiveClass::RunL()
{
	if (iStatus == KErrNone) 
	{ 
		if (iCallStatus == RCall::EStatusHangingUp || iCallStatus == RCall::EStatusIdle || iCallStatus == RCall::EStatusUnknown) 
		{ 
			iCall.Close(); 
		} 
		else if(iCallStatus == RCall::EStatusDialling)
		{ 
			RCall  iCall2; 
			// Try : iCall2.OpenExistingCall(iPhone,iName);
			iCall2.OpenExistingCall(iLine,iName);
			// Try : iCall2.DialCancel ();
			// Try : iCall2.HangUp(iStatus); 
			iCall2.HangUp(); 
		}
		iLine.NotifyStatusChange(iStatus, iCallStatus); 
		SetActive();
	}
}
void CActiveClass:😃oCancel()
{
	ReleasePhone(); 
}
void CActiveClass::StartObserver() 
{ 
	Cancel(); 
	if (InitializePhone() == KErrNone) 
	{ 
		iLine.NotifyStatusChange(iStatus, iCallStatus); 
		SetActive(); 
	} 
} 
TInt CActiveClass::InitializePhone() 
{ 
	TInt theError; 
	if (iLineInited) 
	{ 
		return KErrNone; 
	} 
	theError = iTelServer.Connect(); 
	if (theError) 
	{ 
		return theError; 
	} 
	// Find the number of phones available from the tel server 
	TInt numberPhones; 
	theError = iTelServer.EnumeratePhones(numberPhones); 
	if (theError) 
	{ 
		iTelServer.Close(); 
		return theError; 
	} 
	// Check there are available phones 
	if (numberPhones < 1) 
	{ 
		iTelServer.Close(); 
		return KErrNotFound; 
	} 
	// Read the TSY module name 
	theError = iTelServer.GetTsyName(0, iTsyName); 
	if (theError != KErrNone) 
	{ 
		iTelServer.Close(); 
		return theError; 
	} 
	// Load in the phone device driver 
	theError = iTelServer.LoadPhoneModule(iTsyName); 
	if (theError) 
	{ 
		iTelServer.Close(); 
		return theError; 
	} 
	// Get info about the first available phone 
	RTelServer::TPhoneInfo info; 
	theError = iTelServer.GetPhoneInfo(0, info); 
	if (theError) 
	{ 
		iTelServer.UnloadPhoneModule(iTsyName); 
		iTelServer.Close(); 
		return theError; 
	} 
	// Use this info to open a connection to the phone, the phone is identified by its name 
	theError = iPhone.Open(iTelServer, info.iName); 
	if (theError) 
	{ 
		iTelServer.UnloadPhoneModule(iTsyName); 
		iTelServer.Close(); 
		return theError; 
	} 
	// Get info about the first line from the phone 
	RPhone::TLineInfo lineInfo; 
	theError = iPhone.GetLineInfo(0, lineInfo); 
	if (theError) 
	{ 
		iPhone.Close(); 
		iTelServer.UnloadPhoneModule(iTsyName); 
		iTelServer.Close(); 
		return theError; 
	} 
	// Use this to open a line 
	theError = iLine.Open(iPhone, lineInfo.iName); 
	if (theError) 
	{ 
		iPhone.Close(); 
		iTelServer.UnloadPhoneModule(iTsyName); 
		iTelServer.Close(); 
		return theError; 
	} 
	return KErrNone; 
} 
void CActiveClass::ReleasePhone() 
{ 
	iLine.NotifyIncomingCallCancel(); 
	iLine.Close(); 
	iPhone.Close(); 
	iTelServer.UnloadPhoneModule(iTsyName); 
	iTelServer.Close(); 
}