运行vbscript时，Installshield Automation失败，错误无法创建对象

I am using Installshield 2013 SP1 SAB(stand alone build). I am trying to change the product codes, strings and properties with help of following VBSCRIPT. But my VBScript is failing at the following code with error: "Unable to CreateObject with IS automation interface"I am using Installshield 2013 SP1 SAB(stand alo