Object height

Hi I need help, I need to create a function to show the height of something and cant work out how to do it, any help? Thanks

If you are using the ground, simply create a variable and make it so that it is always set to an objects height

example

click up and down to move it

Thanks Ranchman, I final did it I think! Its one of the exercises from the Intro to alice book. It seems to work so I guess its ok
Thanks anyway