Edit Subassembly values to change corridor shape

What I want to do is to change the shape of the corridor by changing the value of a given name, similar to parametric modeling in Revit.
In this case, I want to change the corridor shape by changing the Subassembly’s Fill Slope, Bench Width, and other values.
I tried the method in the link but could not edit the values.

Does anyone know of a good solution? I would appreciate it if you could tell me.
Please check the DWG and Dynamo files attached.

8_9.横断面作成まで.dwg (2.2 MB)
Subassembly_EditParameter.dyn (39.9 KB)

I was able to change the corridor by changing the Subassembly values using the attached method.
However, we have only been able to change a single value. How can I change multiple values? Examples are Bench Width and Cut Slope.
I think it can be done with list manipulation but I don’t have a good idea.
Thank you for your cooperation.
Subassembly_Parameter.dyn (40.9 KB)

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