Layout custom tab in Revit

Tools
1

Hello,

I’m trying to build my own tab following the guide.
Im trying to make a stack, but the command .stack2 or .stack3 doesnt work.

When i do .stack it works, only i got a stack3 and stack2 next to each other and the alignment is center for vertical.

image

Can i change this?

Kind regards,
Fabian

2

I can only do one embedded picture but i want it to look like this:

pyRevit

Kind regards,
Fabian