urgent need help VAR PLZZZZZ

[mikliil]

Hello
I m new with VAR also in their estimation, So , in my topic , I am led to do a stress test using the VAR model, my variables are as follows: dependent variable (NPL loan not perform) my endogenous variables (inflation, GDP, interest rates, exchange rates $, EUR exchange rate ,), my questions are:
  * How to evaluate a shock GDP (phenomenon of ressecion)?
  * How to interpret the shock response of GDP to the change in% of GDP?

[mikliil]

i need your suggestion