HarmonyOS JSVM 如何实现binding方法在某个对象上

static JSVM_Value SayHello(JSVM_Env env, JSVM_CallbackInfo info) { 
  OH_LOG_INFO(LOG_APP, "Hello World"); 
  JSVM_Value ret; 
  OH_JSVM_GetBoolean(env, true, &ret); 
  return ret; 
} 
JSVM_Value funcValue = nullptr; 
JSVM_CallbackStruct param; 
param.data = nullptr; 
param.callback = SayHello; 
OH_JSVM_CreateFunction(env, "sayHello", NAPI_AUTO_LENGTH, ¶m, &funcValue); 
JSVM_Value global; 
OH_JSVM_GetGlobal(env, &global); 
OH_JSVM_SetNamedProperty(env, global, "sayHello", funcValue); 
JSVM_Value func; 
OH_JSVM_GetNamedProperty(env, global, "sayHello", &func); 
JSVM_Value ret; 
OH_JSVM_CallFunction(env, nullptr, func, 0, nullptr, &ret);