Adding loginEmail to second database

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Hi there!

So I’ve been struggling with this for a few days now. I’m not familiar with backend languages, but I’m starting to get an understanding of it.

I have a database (“Memberinfo”) set up where members can add and update their personal info. I’m trying to write a hook in the backend that automatically adds their login email (_loginEmail from PrivateMembersData) into a column with field key “reference”.

This is what I have so far in data.js :
*I’ve been trying to combine this getEmail code with this bottom example for the save code, within a beforeUpdate hook.

import wixData from 'wix-data';
import wixUsers from 'wix-users';

export function Memberinfo_beforeUpdate(item, context) {
let user = wixUsers.currentUser;
let userId = user.id;           // "r5cme-6fem-485j-djre-4844c49"
let isLoggedIn = user.loggedIn; // true
let options = {
 "suppressAuth": true,
};

user.getEmail()
  .then( (email) => {
 let userEmail = email; // "user@something.com"
  } );
let toSave = {
 "reference":      user.getEmail
};

wixData.save("Memberinfo", toSave)
  .then( (results) => {
 let item = results; //see item below
  } )
  .catch( (err) => {
 let errorMsg = err;
  } );

}

The end result is… absolutely nothing. The form updates with no issues, but the reference field remains blank.

What am I missing here?

Thank you so much!
Crystal