Include a structural break for intercept

[kco5min]

Hi,

First of all I would like to thank you all for this forum....really helpfull

I am using Eviews 6 and i am trying to make an autoregressive equation for inflation.

I am guessing the my model can suffer from structural brakes in intercept and 3rd lag. For this i decided to include a dummy variable. For the 3rd lag it works but for the intercept Eviews says illegal opperation.

My code is:

inf d*c inf(-1) inf(-2) d*inf(-3) inf(-4)

Any ideeas why?

Thx in advance

[startz]

Since "c" represents a column of ones, try replacing d*c with just d.

[kco5min]

Thx a lot.