Instead Of Triggers

I'm trying to write an instead of trigger for a view in SqlExpress...

the table and views are defined as such:


CREATE TABLE [dbo].[Work](
    [WorkID] [int] IDENTITY(1,1) Primary Key,
    [ResourceID] [int] NOT NULL,
    [TaskID] [int] NOT NULL,
    [WorkDate] [datetime] NOT NULL,
    [WorkQuantity] [float] NOT NULL,
    [IsEstimate] [bit] NOT NULL DEFAULT ((0)),
    [Project] [int] NOT NULL,

);

CREATE VIEW [dbo].[ActualWork]
AS
SELECT     WorkID, ResourceID, TaskID, WorkDate, WorkQuantity, Project
FROM         dbo.[Work]
WHERE     (IsEstimate = 0);


CREATE VIEW [dbo].[EstimatedWork]
AS
SELECT     WorkID, ResourceID, TaskID, WorkDate, WorkQuantity, Project
FROM         dbo.[Work]
WHERE     (IsEstimate = 1);


Given that, what is wrong with the following create trigger statement:


Create Trigger trg_InsertActualWork on
dbo.ActualWork Instead of Insert
as
BEGIN
    Insert into dbo.Work(
        ResourceID, TaskID, Project,
        WorkDate, WorkQuantity, IsEstimate
    )
    values (
    inserted.ResourceID, inserted.TaskID, inserted.Project,
    inserted.WorkDate, inserted.WorkQuantity, 0
    );
END