Viveport SDK // DRM fail, close the content

Hi,
I am new to С++.
I have been experimenting for several days now.

I don’t understand what type of code I need to insert into this block?
I understood only that the type of code I need is Static.

I need to change the variable
public:
UPROPERTY(BlueprintReadWrite)
bool bisSuccess;)

in the header ViveportApiDemo.h

Source:

Or something that will help me.