I got follow result:
------------
--SQL Server Mirror Setup Script - Step 1: Add Login For EndPoint
--Run On Principal Server
--Step 1 Start
USE [Master];
GO
IF NOT EXISTS (SELECT * FROM sys.server_principals WHERE name='spcph\algadmin')
BEGIN
CREATE LOGIN [asasa\admin] FROM WIND
and database mirroring doesn't work
on line 70: SET @Step1 = @Step1 + @NewLine + '
does it really need this quote ' ?