Using uniaxialmaterial, non-linear

[dangdang]

Hi guys.
I tried to make non-linear model. So I used 'uniaxialmaterial steel01' command.
I put "Uniaxialmaterial steel01 $fy $E $b" and can get some output.
But i want to put my own maximum deformation.
when material over its yied strength, yielding is started. And It reachs maximum deformation, it goes same as initial elastic tangent.
So I want to put that maximum deformation.
If I use uniaxialmaterial steel01 optional, Can I put maximum deformation?

Thanks for answering

[selimgunay]

Yes you need to record the displacements with a node displacement or stress-strain recorder (depending on your objective) and postprocess the output file to extract the maximum deformation