Dynare forums

Hello,

I'm trying to simulate a RBC model where an economy is hit by a negative leverage shock (the model is inspired from KM97 and PW2012 already talked about in the forum).
In writing my code i used some of the files posted in the forum, but still my simulation doesn't give any result.

Here attached my mod file.

Any help will be appreciated

You use an undefined variable, i.e. R in line 20, column 4. That's why Dynare says

ERROR: RBC.mod:20.4-8: To use an external function (R) within the model block, you must first declare it via the external_function() statement.

??? Error using ==> dynare at 122
DYNARE: preprocessing failed

Hello,

yes you are right. Thank you for your reply.