OptionButton.Value Property (Access)
Determines or specifies whether or not the specified option button is selected. Read/write Variant.
Set to True to select the option button. The default value is False.
The Value property returns or sets a control's default property, which is the property that is assumed when you don't explicitly specify a property name.
The Value property is not the same as the DefaultValue property, which specifies the value that a property is assigned when a new record is created.