How do you speed up aging on the sim's 2?

Get the box at the top of the screen then type in boolprop testingcheatsenabled true. (just like Idid it) then hold down shift click on the sim you want to speed up the aging and then click set to birthday and they will go up to the next age. Or you can go to spawn. Then click on sim modder which will be a fake baby doll and click on the baby and click on what age you want the human to be set as.