Alright, thanks a lot.
I've gotten the program to work using a dummy variable for labor market participation, and the program seems to work fine using two-step mode.
However when i try to use Maximum Likelihood mode, i get an error message saying "Missing Values in @LOGL series at current coefficients at observation 1", Is there something i need to do in order to use to use ML mode?
Another question is that, since in the end the program shows me a spool, as opposed to an equation, i was wondering how would i analyze and run tests regarding the goodness of fit of the model?