How To Retrieve A Value From The Inserted Table

I'm writing a trigger for my DotNetNuke portal that requires me to read the value of a just inserted record. I believe I'm doing this right, still I'm unable to retrieve the desired value from the Inserted table. What am I doing wrong? Here is my code:











CREATE TRIGGER tr_addEditorRole ON [dbo].[UserPortals]


AFTER INSERT


AS


Declare @Portal int


set @Portal = (select PortalId FROM inserted)





Declare @TabId Int


set @Tabid = (select TabID from Tabs where Tabs.PortalID = @Portal


and Tabs.TabName = 'MyTab')





Declare @ModuleId int


set @ModuleId = (SELECT ModuleId FROM Modules WHERE Modules.TabID = @TabId


and Modules.ModuleTitle = 'MyModule')





update Modules


set


AuthorizedEditRoles = '-1;'





where ModuleId = @ModuleId