GMM estimation

[Lahchey]

Heii!!!

I would be glad if anyone could help me with this GMM estimation.
I want to estimate the below model.

Y =α +β1 X + β2 Y(-1) + β3 Z + β4 X*Z

where X is a dummy variable.

Since one lag of the dependent variable is a regressor, should it be the instrument?
(I have attached the equation window)

What should I write in the instrument column?

Thank you.
Lahchey