Ok this is the first MySims. Sence you can't jump how would you make the person rise into the air?
example by going downstairs and upstairs.
Have a look at Eldar Saga Moon Jump that I've been trying out.
http://wiird.l0nk.org/forum/index.php/topic,7858.0.html
I know how to make a moon jump, but in MySims everything is flat.(mostly but you have to go to a different area for height but that is away from flat ground)
Eldar Saga is flat too. I understood. Look for velocity and scroll around in the memory tab. You should find the velocity tab and the make a stack so that each time you press whatever it either levitates you or moon jumps you. Use the float trick on the site (If it's floats of course).
Are you asking how to find the Z axis? If so, then what you can do is find X and Y, and Z will probably be really close to them.
No the Y axis. (Thats up right I only work with x and y axis)
The trouble I come across is that cameras use y axises too.
Go in the desert and go up and down those hills. You'll get your y axis.
I forgot about the desert. OK will do.