Duplicate multiple records to another table

Hi

I would like to succeed in creating a button allowing me to transform quotes into invoices.

In Ninox, my quotes are built like this:

When I create an estimate, a record is created in the "Estimate" table which I will name for this example "Estimate-01".

A subtable named "Services in quote" allows me to add services:
- Service 1 attached to Estimate-01 in which I enter the name of the service, the unit price, the quantity, etc.
- Service 2 attached to Estimate-01 in which I enter the name of the service, the unit price, the quantity, etc.
- Service 2 attached to Estimate-01 in which I enter the name of the service, the unit price, the quantity, etc.

In Ninox, my invoices are built like this:

When I create an invoice, a record is created in the "Transactions" table which I will name for this example "Transaction-01".

A subtable named "Billed Services" allows me to add services:
- Service 1 attached to Transaction-01 in which I enter the name of the service, the unit price, the quantity, etc.
- Service 2 attached to Transaction-01 in which I enter the name of the service, the unit price, the quantity, etc.
- Service 2 attached to Transaction-01 in which I enter the name of the service, the unit price, the quantity, etc.

The first part of my code works. It allows me to create a record in the Transactions table from a record in the Quotes table

let me := this;
---
Création de la transaction
---;
let newRecTransaction := (create Transactions);
newRecTransaction.(Compte := me.Compte);
newRecTransaction.('Activités' := me.'Activités');
newRecTransaction.('Opportunités' := me.'Opportunités');
newRecTransaction.(Projets := me.Projets);
newRecTransaction.(Entreprise := me.Entreprise);
newRecTransaction.('Taux de cotisation URSSAF pour les prestations de services' := me.Compte.Entreprise.'Taux de cotisation URSSAF pour les services');
newRecTransaction.('Taux de cotisation URSSAF pour les marchandises vendues' := me.Compte.Entreprise.'Taux de cotisation URSSAF pour les marchandises');
newRecTransaction.('Nom complet' := me.'Nom complet');
newRecTransaction.('Téléphone' := me.'Téléphone');
newRecTransaction.('E-mail' := me.'E-mail');
newRecTransaction.(Adresse := me.Adresse);
newRecTransaction.('N° de TVA' := me.'N° de TVA');
newRecTransaction.('N° de SIRET' := me.'N° de SIRET');
newRecTransaction.('Numéro du devis' := me.'N° de devis');
popupRecord(newRecTransaction);

I can't create the code that allows me to take all the records from the "Services offered" sub-table that are linked to a record from the Estimates table. Once all the records have been taken over, there should be as many records created in the "Invoiced services" sub-table that are linked to the new record in the Transactions table.

Please note that the fields of the Services offered table and the Services billed table are identical and include the following information: service name, price only, quantity, etc.

I tried the following code but it does not work because I have the following message: The expression gives multiple results.

---
Création du service à facturer
---;
let attServices := 'Services en devis 1:N'.'Produits et services';
let newRecService := (create 'Services facturés');
newRecService.(Transaction := newRecTransaction);
newRecService.('Produits et services' := newRecTransaction.attServices);
newRecService.('Date du service' := newRecTransaction.'Date de facturation');
newRecService.('Produits et services' := newRecTransaction.'Activités'.'Produits et services');
newRecService.('Durée' := newRecTransaction.'Activités'.'Durée');
newRecService.(TVA := number(newRecTransaction.Entreprise.'Montant de la TVA calculé'));
popupRecord(newRecService)

Can you help me complete the code allowing me to create the new records in the Service billed sub-table from the data in the Services offered table? Thanks for your help.