Hello everybody:
 
I am trying to estimate a SUR system with some restrictions in the parameters by means of the menu that Gretl has. I am able to introduce the different equations properly, but although I write the restrictions in the screen the results I obtain don't take these restrictions into account. The code I introduce is something like:
 
equation x1 0 x2 x3 x4 x5
equation x6 0
equation x7 0
restrict b[1,2]=b[2,1]
 
Thanks in advance
Cheers
Javi