Using variables defined by piecewise functions

Hello,

I need to define a variable X_t given by

X_t = 0 if A_t < B_t,

and

X_t = A_t - B_t otherwise.

Is there a way of doing this in Dynare?

Many thanks,

Sébastien

That means

You can enter this into Dynare, but only for deterministic simulations, not when using stoch_simul.