Thank you for the tip, appreciate the reply even more from MPTL16  Idrija,Bohinj,Slovenia.

I still can't get it to work despite knowing the logic of the option 4.

I suspect I need to understand the event handler this syntax return.

Now, it just move from stage 4 (straight xmin,ymin, v =+ to stage 2 Xmax , ymin, v= +
I will try again when more free :)
Thanks !!