Question about parentclass object to subclass object conversion in LVOOP

[nzywlll80@gmail.com]

I saw an example project, changing an enumeration item in the passed parent object data, the object becomes the corresponding subclass of the enumeration item, how is this implemented (or labview object-oriented has this mechanism)?

The example documents can be found in the annex.

[ZYOng]

In Demo #2, there are no child classes for different brews. Instead, there are different child classes for size.

[nzywlll80@gmail.com]

In the block diagram i have been  post, after the Set Brew method call, the Drink class change to the corresponding Brew class,corresponding.How is this implemented?

[nzywlll80@gmail.com]

In the block diagram i have been  post, after the Set Brew method call, the Drink class change to the corresponding Brew class,corresponding.How is this implemented?

[nzywlll80@gmail.com]

In the block diagram i have been  post, after the Set Brew method call, the Drink class change to the corresponding Brew class,corresponding.How is this implemented?

[ZYOng]

See the images below. The object is the Drink class until a new instance of Size/Brew class is used to replace the array at the Select Size event.