Adobe Native extension Help required for Reference argument

programming
1

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[TD=“class: postcell”]I am new to adobe native extension.
Like in c++ we have reference argument, is something available for adobe native extension.
C++ Code example //
void add(String &newname)
{
newname = L"Hi";
}// C++ end
Need similar to this in ANE ///

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FREObject add(FREContext ctx, void* funcData, uint32_t argc, FREObject argv[])
{
argv[0] = L"hi";
}
i tried below code but i didnt get reference values
FREObject add(FREContext ctx, void* funcData, uint32_t argc, FREObject argv[])
{
int nCodeLen;
FREObject result;
uint8_t* pValue = NULL;
const char *testString = “Hello World from C++!”;
FRENewObjectFromUTF8(strlen(testString)+1, (const uint8_t *) testString, &result);
argv[0] = result;
}