Raising the whole grid in Terraformer

Is it possible to raise the whole grid in No Limits Terra former? Like highlight the whole grid and raise it up?
Because I really want make a terrain Meisho Jet coaster after I finish Super Camel Coaster, which is also a jet coaster.

yep

just go to tools, ajust height and reais or lower it from there

I found the tool icon, but its grayed out. Do I have to make a whole track to enable it? Or is there something else? Ive never done this before.

[jayman]

go to the menu bar at the top hover over tools,click adjust highth, and type in value