Hi, I need help. I need to use tsls function on my simultaneous model. This is my model: Ct=a0+a1Yt+a2Ct-1+ut1 Yt=b0+b1It+b2Mt+ut2 It=c0+c1rt+c2It-1+ut3 Gt=Yt-Ct-It How to use tsls on this model, please? Thank you for your help. Lado