How to type a a euler equation which contain Σ?

Dear profeeor pfeifer:
If a euler equation like (I an very sorry that I cann’t type it in here,so I upload a attachment file in follows ).how can I type it into the model block of dynare? There is no part of introduce in dynare.
Thank you very much!
Yun

a euler equation which contain Σ file attachment as follows:
How to type a a euler equation which contain Σ.doc (39.5 KB)

In the end, you have to write out all terms of the sum, but you could use the preprocessor for doing this.

Dear professor pfeifer:
use the preprocessor for doing this??In reality I was stupid, I do not know whether you can give me an example?
Thank you very much for you help!
Yun
2014-3-12

You can use a for loop in the preprocessor to write out the sum. However, if n is small in your case, it is not worth bothering with this and entering the equation manually is easier.

Dear professor pfeifer:
Thank you very much for your help.Under the guidance of you,I know what I shoud do.
Yun