Can't get textbox value after auto fill user info

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Hi Wix ,
I have a form with 3 textboxs: user name, email and phonenumber.
When user login, i get these info and fill it into textboxs on page load:

function getUserInfo(user) {

//get current user email
user.getEmail()
  .then( (email) => { 
    $w('#customerEmail').focus(); 
    $w('#customerEmail').value = email;   
      } );

//get current user name
wixData.query("Members/PrivateMembersData")
  .eq("_id", user.id)
  .find()
  .then( (results) => {
 //$w('#customerName').focus();
    $w('#customerName').value = results.items[0].firstName + ' ' + results.items[0].lastName;   
    $w('#customerPhone').value = results.items[0].mainPhone;   
  } );
}

If i don’t touch these textboxs and click submit button, these info were not saved into my table. Just when i type it again on textboxs and click submit, they will be saved. I don’t understand what happened, please help me. I don’t want my customer have to retype them when logged in.