Variable cannot be added when I specify the min value and max value

[Aunthas]

I added the edit control to my dialog then I right-clicked and chose "Add variable...", the "Add Member Variable Wizard" appeared.

In "Add Member Variable Wizard", I chose the category to "Value" and chose the type to "float". I named the variable and specified min and max value. When I clicked "Finish", the variable was not added to the code.

Why????