HELP with Wix Backend code returning Array(0)

From my front end i am calling this function as …

Maybe this one…???

$w.onReady(async()=>{
	let memberId = "" //<---- generate here your Member-ID
	let groupId = ""	//<---- generate here your Group-ID

	let myWishedResults = await  addMemberIdToGroup(memberId, groupId);
	console.log(myWishedResults);
	//---------------------------------------------------
	$w("#createProfileErrorLabel").text = "Adding member "+ currentMemberId+" to groupID "+groupId;
	
});


function addMemberIdToGroup(memberId, groupId) {
	let addGroupIds = {"groupId" : groupId,  "memberIds" : [memberId]}
	let options = {"suppressAuth": true}

	addMembersToGroup(addGroupIds, options).then((result) => {
		console.log("Add member to groups"+result);
		return result
	}).catch((err) => {console.log(err);});
}