| private int _size;
public int Size
{
  get
  {
    return _size;
  }
  set
  {
    if (value < 0)
    {
      _size = 0;
    }
    else
    {
      _size = value;
    }
  }
}
foo.Size++; | class-id Things.
01 _size        binary-long private.
01 ReadOnly     binary-long property with no set value 3. 
01 ReadWrite    binary-long property. 
property-id Size binary-long.
 *> Use property-value inside properties to
 *> pass the value in or out
getter.
    set property-value to _size
setter.
    if property-value < 0
        set _size to 0
    else
        set _size to property-value
    end-if
end property.
method-id main static.
    declare foo = new Things()
    add 1 to foo::Size
    display foo::Size
    display foo::ReadOnly
    set foo::ReadWrite to 22
end method.
end class. | Private _size As Integer
Public Property Size() As Integer
  Get
    Return _size
  End Get
  Set (ByVal Value As Integer)
    If Value < 0 Then
      _size = 0
    Else
      _size = Value
    End If
  End Set
End Property
foo.Size += 1 |