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Problem with SAP2000 API DirHistNonlinear.SetDampProportional

Problem with SAP2000 API DirHistNonlinear.SetDampProportional

Problem with SAP2000 API DirHistNonlinear.SetDampProportional

Currently I am trying to use API to interact with SAP2000 program.
When using the API, I encounter an abnormal behaviour described below:

I. The function I use: Definitions-> Load cases > Direct TH Nonlinear -> SetDampProportional

I call the API with these parameters:

SapModel.LoadCases.DirHistNonlinear.SetDampProportional("LCASE1", 2, 0, 0, 0.1, 1, 0.05, 0.06)

(same as example in guide)

But the parameters are appeared to set incorrectly:

II. My goal is to set the damping in Viscous Proportional Damping area like this

III. I think the settings in (I) and (II) are different because when I run analysis, setting (II) run faster than (I) (like about 15x speed). Yet I do not which API to set the damping parameter like (II) no matter what I try.
So could someone please guides me how to achieve (II) settings using API they provided? (Setting values in Viscous Proportional Damping instead of Additional Modal Damping area)

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