From: Squeak Smalltalk Date: 2006-07-28T14:39:21+09:00 Subject: Howto ? :: Person is a customer Hi, Beginner question probably but I do not know how to do it correctly. I will read informations from a file and create an object. During my load I do not know if it is a employe or a customer so I create a person object. After the object is created I will know which type it is. After I know I want to change the type of my object. How will you do it ? Best Regards W.