Update ForeignKey Sharepoint List using onSelect button with Patch() - PowerApps

Question

My problem is what I describe in the title. I want to update a foreign key on my sharepoint list with a button.

I have two List with OneToMany relation:

User{ ID, Name, Surname}
Book{ID, Title, Author, ID_User}

When I go one user, with a gallery, i can see the book related with a Filter:

Filter(Book,BrowseGallery1.Selected.ID = ThisRecord.IDUser.Id)

In this gallery i want to add a Trash and when i click the button remove the Book of this User, soo i want to remove the relation and see only the book related with this user.

I try with:

Patch(ThisItem, First( Filter(Book, BrowseGallery1.Selected.ID = ThisRecord.IDAnagrafica.Id)), { ID_User:  0} )

But give me an error. I try this patch with other columns like {Title: "TEST"} and it work.

Patch(ThisItem, First( Filter(Book, BrowseGallery1.Selected.ID = ThisRecord.IDAnagrafica.Id)), { ID_User:  ""HERE WHAT I NEED TO SET""} )

Thx for help

Answer 1

{ID_User: Value("Your value")}

https://powerusers.microsoft.com/t5/Building-Power-Apps/Patch-SharePoint-List-Number-Column/td-p/102371

---

EDIT

Look at this answer

https://powerusers.microsoft.com/t5/Building-Power-Apps/The-type-of-this-argument-X-does-not-match-the-expected-Type/td-p/599727

from this

{ ID_User:  0}

to this

{ ID_User: {Value:"YOUR ID OR TEXT"} }