[Ipopt] nele_hess

[Ned Nedialkov]

If I use
	AddIpoptStrOption( ipopt_problem, "hessian_approximation", "limited- 
memory" );

do I have to give the number of nonzeros in the Hessian, that is, do  
I have to set nele_hess?
The function evaluation the Hessian returns false in this case.

Many thanks,
Ned