ID 250611 - Top-level null attributes are displayed as integers in the Attributes tab

Problem summary:

When a location has a top-level null attribute, the Attributes tab displays the attribute as if it's an integer attribute. This is a regression from 1.6v3

Steps to reproduce:

1. Create LocationCreate and OpScript nodes, wired together
2. View and edit the OpScript node
3. Target the OpScript node to /root/world

4. Set the script to:

   Interface.SetAttr("a1", NullAttribute())Interface.SetAttr("a2.b2", NullAttribute())Interface.SetAttr("a3.b3.c3", NullAttribute())

5. In the Scene Graph tab, select /root/world

Expected behaviour:

The a1 attribute is not displayed in the Attributes tab

Actual behaviour:

The a1 attribute is displayed as locally set with a value of "0".

Reproduced versions/platforms:

• 2.0v1
• 2.5v5

Customer version/platform:

Not supplied