Change Campaign Status [OperatorError.OPERATOR_NOT_SUPPORTED @ operations[0]]

[Michael D]

Hi,

Im trying to Change CampaignStatus. But I get the Error:
 [OperatorError.OPERATOR_NOT_SUPPORTED @ operations[0]]

Does anyone know what Im doing wrong here?

            var client = new CampaignService.CampaignService();

            //create Campaign with Status
            Campaign campaign = new Campaign();
            campaign.id = CurrentCampaignId;
            campaign.idSpecified = true;

            switch (index)
            {
                case 0:
                    campaign.status=CampaignStatus.ENABLED;
                    break;
                case 1:
                    campaign.status=CampaignStatus.PAUSED;
                    break;
                case 2:
                    campaign.status=CampaignStatus.REMOVED;
                    break;
            }

            //Create the Operation
            CampaignOperation operation = new CampaignOperation();
            operation.operand = campaign;
            operation.@operator= Operator.REMOVE;
            operation.operatorSpecified = true;        
           
            try
            {
                client.PreAuthenticate = true;
                client.UseDefaultCredentials = true;
                client.RequestHeader = new SoapHeader
                {
                    clientCustomerId = AdWordsIdManagement.IdManagement.clientCustomerId,
                    developerToken = "XXXXXXXXXXXXXXXXXXXXXX",
                    partialFailure = false,
                    userAgent = "AdWordsChangeStatus",
                    validateOnly = false,
                };
                client.PreAuthenticate = true;

                CampaignReturnValue returnValue = client.mutate(new CampaignOperation[] {operation});

                if (returnValue != null && returnValue.value != null && returnValue.value.Length > 0)
                {
                    Campaign changedCampaign = returnValue.value[0];
                }
                else
                {
                    Console.WriteLine("No status has changed");
                }

            }
            catch (Exception ex)
            {
                throw new System.ApplicationException("Failed to change status", ex);
            }  

Thank you ;)