Check doesn't save eigenvalues (or i don't know where)

Hi,
where can i find the eigenvalues of check command (as a vector) in order to use it for other purposes?
dynare guide says " check returns the eigenvalues in the global variable oo_.dr.eigval.
oo_.dr.eigval Contains the eigenvalues of the model, as computed by the check command.
I understand i will find the eigenvalues vector in oo_.dr.eigval but it is empty.
If i try to simulate (stoch_simul) the model, instead, typing oo_.dr.eigval i obtain the eigenvalues.
The solution could simply be to use the eigenvalues coming from stoch_simul but this stops when bk is not satified and i can't obtain anything.
where can i find the eigenvalues of check command (as a vector) in order to use it for other purposes?
dynare guide says " check returns the eigenvalues in the global variable oo_.dr.eigval.
oo_.dr.eigval Contains the eigenvalues of the model, as computed by the check command.
I understand i will find the eigenvalues vector in oo_.dr.eigval but it is empty.
If i try to simulate (stoch_simul) the model, instead, typing oo_.dr.eigval i obtain the eigenvalues.
The solution could simply be to use the eigenvalues coming from stoch_simul but this stops when bk is not satified and i can't obtain anything.