How can I set verticalAlignment

I want to set verticalAlignment at my node, but it does not work, any help, thank you.
here is the sample code.

https://jsfiddle.net/batobolg/napd18y6/3/

The alignment controls where the element (a TextBlock in your case) goes within the “Auto” Panel.

You specified go.Spot.Left, which means the middle of the left side. That’s why you see the “Alpha” where it is.

Setting TextBlock.verticalAlignment only controls where to draw glyphs within the bounds of the TextBlock. It does not move the TextBlock anywhere. https://gojs.net/latest/intro/textblocks.html#TextAlignment

Thank you Walter, It works, I got it, alignment do the all works.

see,

https://jsfiddle.net/batobolg/napd18y6/4/