Hi, I was doing a program a few minutes ago and I started to wondered about something. When defining certain variables, we have to use the set function to assign them a value, like a ADODB.recordset. But some, like a simple interger we don't have too. Is there a way to know if the variable we are using need to be set or not. It's pretty obvious for some type like integer and string, since I've been using them forvever, but when using a new type of variable that we never use before, how can we know if we need to do it or not? Is there a reason???