$owner role is not working - node.js

Question

I am trying to give access only to owner of book in but it is not working.I have relationship between user and books.I have seen every question about loopback acl but I don't know where I am making mistake. This is my boot file
var User = app.models.userData;
User.create([
{username: 'John', email: 'john#doe.com', password: 'opensesame',bookId:""},
{username: 'Jane', email: 'jane#doe.com', password: 'opensesame',bookId:""},
{username: 'Bob', email: 'bob#projects.com', password: 'opensesame',bookId:""}
], function(err, users) {
if (err) throw err;
console.log('Created users:', users);
// create project 1 and make john the owner
console.log("This is users[0] " ,users[0].books);
users[0].books.create({
name: 'project1',
price: 100
}, function(err, project) {
if (err) throw err;
User.update({id:users[0].id},{bookId:project.id},function(err,docs){
if(err) throw err;
else{
console.log("Updated",docs);
}
});
console.log('Created project:', project);
})
users[1].books.create({
name: 'project2',
price: 100
}, function(err, project) {
if (err) throw err;
User.update({id:users[1].id},{bookId:project.id},function(err,docs){
if(err) throw err;
else{
console.log("Updated",docs);
}
});
});
});
And This is my usersData.json
"relations": {
"books": {
"type": "hasMany",
"model": "book",
"foreignKey": "ownerId"
}
"acls": [
{
"accessType": "*",
"principalType": "ROLE",
"principalId": "$everyone",
"permission": "DENY"
},
{
"accessType": "*",
"principalType": "ROLE",
"principalId": "$owner",
"permission": "ALLOW",
"property":"findById"
}
This is my books.json
"relations": {
"userData": {
"type": "belongsTo",
"model": "userData",
"foreignKey": "bookId"
}
},
"acls": [
{
"accessType": "*",
"principalType": "ROLE",
"principalId": "$everyone",
"permission": "DENY"
},
{
"accessType": "*",
"principalType": "ROLE",
"principalId": "$owner",
"permission": "ALLOW",
"property":"findById"
}
],
I know there are many questions related to this I have seen every question about this but it is not working.Any help would be appreciated thanks.