Read-only parameter

Hi, i want to change certain parameter which is Normalized Curve Parameter. However the last part of SetParameterbyName gives error that said its read-only. Is there a way changing the read-only parameter with phyton or just dynamo?
I’m still beginner on this kind of thing so pretty much reading other similar topics makes no sense to me.

Is the param1 being driven by a formula?

Being able to see the family parameters would help.

Hello ,

This parameter is directly or indirectly depend upon on some other editable parameter through some formula or some logic.
you need to find out that parameter for changing this parameter.

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