Changing the Value of the Visual Studio 2017 User Macro

I am using Visual studio 2017.

I added a user macro in the project file and set the value.
The user macro was added to the project file by adding the following two lines to the project file:

US>The macro was created in the project file with the intention of making it possible to modify one of the frequently used keyword modifications.

Could you tell me how to change this value in the properties dialog?
https://docs.microsoft.com/ja-jp/cpp/build/working-with-project-properties?view=vs-2019
See
Edit
with the action of

I don't know how to change that value.

Please let me know

Edit → Macro and transition screen are shown below.
Image Description

In the above picture, the selected state is the newly added macro.
I want to change the value of this macro.

Property Manager