Just a little clueless... using Coldfusion8, if I dump my session to file:

```
<cfdump output="D:\ColdFusion8\logs\dump.txt" var="#Session#">

```

this includes:

```
accounttyp: whatever

```

I get the same result if I only dump this parameter:

```
<cfdump output="D:\ColdFusion8\logs\dump.txt" var="#Session.accounttyp#">

```

**Question:**  

If it's defined and dump-able, how come checking **isDefined** like so: 

```
<cfdump output="D:\ColdFusion8\logs\dump.txt" var="#IsDefined(Session.accounttyp)#"> 

```

turns out to be **NO**? If it's there it should be defined, shouldn't it?

Thanks for some clarification.