Ansys Meshing scripting

Hi,

Hi,
I got already-working journal for the parametric geometry creation. Now I want to prepare a selective body meshing, in ANSYS Meshing.
I want to do this by workbench scripting, ie. by creating and reading a workbench journal (.wbjn file) in Workbench. This is a way how I dealed with the geometry parametrization.
However as I experienced, Workbench does not record clicking "generate mesh on selected body" in Meshing. I tried another way unsuccessfully - it does not record clicking "Generate mesh through this step" in the Meshing Worksheet panel.
I know that there is "Mechanical scripting" utility in Meshing, so maybe there I could set up the selective body meshing and running the meshing process, however I got there two issues:

Workbench does not record clicking "Run macro" in Meshing
I dont have neither experience nor source, for Mechanical scripting

Therefore I would like to ask for advice how to deal with this. Namely do the following in Workbench journal:

Open existing project
update a geometry using new dimensions (I already got this)
update geometry in meshing and do a selective body meshing (here I got the problem)
export the .msh file