[Forum FAQ] How do I disable all subscriptions without disabling Reporting Services and SQL Server Agent?

Question

Introduction
There is the scenario that users configured hundreds of subscriptions for reports. Now they want to disable all the subscriptions, but Reporting Services and SQL Server Agent service should be enable, so the subscriptions will not delivery reports to users
and users could run the reports and create jobs on the server.
Solution
To achieve this requirement, we need to list all subscriptions and their schedules by running query, then use loop statement to disable all the subscription schedules by Job name.
On the Start menu, point to All Programs, point to Microsoft SQL Server instance, and then click SQL Server Management Studio.
Type Server name and select Authentication, click Connect.
Click New Query in menu to open a new Query Editor window.
List all subscriptions and their schedules by running the following query:
Use ReportServer
go
SELECT   c.[Name] ReportName,           
s.ScheduleID JobName,           
ss.[Description] SubscriptionDescription,           
ss.DeliveryExtension SubscriptionType,           
c.[Path] ReportFolderPath,           
row_number() over(order by s.ScheduleID) as rn             
into
#Temp  
FROM     
ReportSchedule rs           
INNER JOIN Schedule s ON rs.ScheduleID = s.ScheduleID           
INNER JOIN Subscriptions ss ON rs.SubscriptionID = ss.SubscriptionID           
INNER JOIN [Catalog] c ON rs.ReportID = c.ItemID AND ss.Report_OID = c.ItemID   
select * from #temp
Use the loop statement to disable all the subscription schedules by Job name:
DECLARE
@count INT,
@maxCount INT  
SET @COUNT=1  
SELECT @maxCount=MAX(RN)
FROM
#temp         
DECLARE
@job_name VARCHAR(MAX)                  
WHILE @COUNT <=@maxCount        
BEGIN      
SELECT @job_name=jobname FROM #temp WHERE RN=@COUNT  
exec msdb..sp_update_job @job_name = @job_name,@enabled = 0     
SET @COUNT=@COUNT+1   P
RINT @job_name   
END   
PRINT @COUNT 
Reference
SQL Agent – Disable All Jobs
Applies to
Reporting Services 2008
Reporting Services 2008 R2
Reporting Services 2012
Reporting Services 2014
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Answer 1

Thanks,
Is this a supported scenario, or does it use unsupported features?
For example, can we call exec [ReportServer].dbo.AddEvent @EventType='TimedSubscription', @EventData='b64ce7ec-d598-45cd-bbc2-ea202e0c129d'
in a supported way?
Thanks! Josh