[Ipopt] suppress solver output

[Hossein Haghighat]

Hello,
I use Bonmin to solve a model. This solver uses Ipopt as the NLP solver. I
want to suppress all the output message and need only the final results.
I set the parameters as below:

option bonmin_options "bonmin.algorithm B-BB  print_level 0 outlev 0 ";

but this does not work.Does anybody know how this can be avoided?

Thank you in advance.

-- 
regards,
Hossein.
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