[Gretl-users] MLE with lists

Dear forum,    I am struggling with my variable lists once again. I expected the following two ML estimations to give the same results, but they don't. Any ideas?        #estimation 1     scalar c_ = 0.1     scalar rng = 0.1     scalar err = 0.2       mle ll = -ln(lambda) - sqrtPark/lambda           series lambda = mean(sqrtPark)         series lambda = c_ + rng * sqrtPark(-1) + err * lambda(-1)           params c_ rng err     end mle --robust         #estimation 2     list    xDepVars = sqrtPark     list    xExpVars = sqrtPark(-1)        c_ = 0.1     rng = 0.1     err = 0.2       series xDepVar = xDepVars[1]     series xExpVar = xExpVars[1]       mle ll2 =  -ln(lambda2) - xDepVar/lambda2           series lambda2 = mean(xDepVar)         series lambda2 = c_ + rng * xExpVar + err * lambda2(-1)           params c_ rng err     end mle --robust   Many thanks in advance,  Daniel