cmp command

[Clarissa Gallegos]

Hi, I'm trying to run a 3SLS with tobit, i read about cmp command, but i'm not sure about how to write it.

I have three independent variables: hth, htm & amp (hth and htm are censored in left, and amp is dicotomic)

Basically, the system is like this

hth = htm amp x1 x2 x3
htm=hth amp x4 x5 x6
amp=hth htm x7 x8 x9

Thanks for your help