1. the value types are not immutable, which will make it very hard to work with them on larger scale. You should create new instances instead of modifying the original ones, keeping the originals intact.
2. The object hierachy is borked. You are exposing way to much information. Instead of generically allowing to save values and options in the Object, you should specialize the types much more and hide the actual value.
3. You should convert the value when creating the type, using (int) for example, or throw an exception if not convertable. The current converts the values at many places, which increases the complexity of the code unnecessarily.