execute problem

I whan to run this code, but it still doesn't work. :(
DECLARE @.MyText VARCHAR(1000)
SET @.MyText = 'SET IDENTITY_INSERT [Table1] ON ' + CHAR(13) + ' GO'
EXEC(@.MyText)
MSSQL doesn't like the "GO"
ThanksWhy do you need the GO?

USE Northwind
GO

SET NOCOUNT ON
CREATE TABLE myTable99(Col1 int IDENTITY(1,1), Col2 char(1))
GO

DECLARE @.mySQL99 VARCHAR(1000)
SET @.mySQL99 = 'SET IDENTITY_INSERT myTable99 ON INSERT INTO myTable99(Col1,Col2) SELECT 1,''A'''
+ ' SELECT * FROM myTable99'
SELECT @.mySQL99
EXEC(@.mySQL99)
GO

SET NOCOUNT OFF
DROP TABLE myTable99
GO

And why would you do dynamic sql for this anyway?