Please, I need you to put me through on two things. 

First, how can I save a correction matrix using hansl syntax.

Secondly, I want to perform a forecasting after estimating through maximum likelihood. For example, as shown below, 

mle ll = "likelihood function"

series e = GDPrate  -  constant 

params constant 

end mle

If I want to perform the dynamic forecast or one step ahead forecast, what is the additional syntax needed. 

I hope to receive your response soon. 

Regards

Timmy John