How to overload the conversion operator from a string to a structure for JSON?

Development Programming & Scripting C++
,
1

Hello!

USTRUCT()
struct FDurationInfoSum
{
	GENERATED_BODY()
	
	UPROPERTY()
	double sum;

	UPROPERTY()
	DurationTypeInfo durationInfoType;

};

When i try to load JSON file to USTRUCT
with function
FJsonObjectConverter::JsonObjectToUStruct

parser show errors:

Unable to import JSON string into DurationInfoSum property

Is there a way to overload the operator or constructor of the FDurationInfoSum structure so
that structures can be set as a string in a JSON file?

In C#, this is done via
public static explicit operator DurationInfoSum(String obj)

2

I tried adding operator overloads, but there is still an error during JSON parsing.

	FDurationInfoSum()  {
		sum = 0;
	}
	FDurationInfoSum(const FString& str) : sum(5) {
	}
	FDurationInfoSum& operator=(const FString & str) {
		return *this;
	}

Error:

Unable to import JSON string into DurationInfoSum property