Editable Grid: Save Into not working Properly

Hi! I have the following editable grid, in which some values are passed from another record and other ones are completed by the user

When I run the process model, it seems to work properly, auto-generated values appear and the user completes the rest of values:

But after this, the auto-completed values don´t appear in the record! I´m using a WriteRecords function directly in the interface, not in the process model

My configuration is the following one:

I´m using the fv!item to save the values into the local variables, the appending to create new rows and finally using the writeRecords function. But it fails for the variables in which the value is a rule input from a previous interface (idFactura, idPedido, proveedor). The rest of them are saved correctly. What can I do? Thanks a lot!

My code is the following:

a!localVariables(
  local!data,
  {
    a!gridLayout(
      label: "A continuación, incorpore las líneas de factura correspondientes y pulse el botón de creación",
      headerCells: {
        a!gridLayoutHeaderCell(label: "Factura"),
        a!gridLayoutHeaderCell(label: "Pedido"),
        a!gridLayoutHeaderCell(label: "Proveedor"),
        a!gridLayoutHeaderCell(label: "Material"),
        a!gridLayoutHeaderCell(label: "Precio Unitario"),
        a!gridLayoutHeaderCell(label: "Cantidad"),
        a!gridLayoutHeaderCell(label: "Importe Total"),
        a!gridLayoutHeaderCell()


      },
      columnConfigs: {
        a!gridLayoutColumnConfig(width:"DISTRIBUTE"),
        a!gridLayoutColumnConfig(width:"DISTRIBUTE"),
        a!gridLayoutColumnConfig(width:"DISTRIBUTE"),
        a!gridLayoutColumnConfig(width:"DISTRIBUTE"),
        a!gridLayoutColumnConfig(width:"DISTRIBUTE"),
        a!gridLayoutColumnConfig(width:"DISTRIBUTE"),
        a!gridLayoutColumnConfig(width:"DISTRIBUTE"),
        a!gridLayoutColumnConfig(width:"ICON")


      },
      rows: a!forEach(
        items: local!data,
        expression: a!gridRowLayout(
          contents: {
            a!textField(value:ri!recordFact['recordType!{51d44df6-c727-4443-8114-aef8a7509b41}CPF Maestro Facturas.fields.{6f993c32-7f64-424a-859f-d779194c4a18}id_factura'], saveInto: {fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{9c440183-9c71-423b-a300-eb4c3ea747fb}idFactura']}
            ),
            a!textField(value:ri!recordFact['recordType!{51d44df6-c727-4443-8114-aef8a7509b41}CPF Maestro Facturas.fields.{e8009662-ca1c-43da-9c72-2840463214be}id_pedido'], saveInto: {fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{60774c8e-9b47-486f-9fea-b32c525c05fd}idPedido']}
            ),
            a!textField(value:ri!recordFact['recordType!{51d44df6-c727-4443-8114-aef8a7509b41}CPF Maestro Facturas.fields.{c2a60669-567e-41b8-acdd-29729912b3e5}nomProveedor'], saveInto: {fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{844be35b-6de5-434e-9c69-e7c7b8a148dd}proveedor']}
            ),
            a!textField(value:fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{019eb28b-727b-4e2c-8160-1bcf8a747ef1}material'], saveInto: {fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{019eb28b-727b-4e2c-8160-1bcf8a747ef1}material']}
            ),
            a!floatingPointField( value: fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{eda9bda7-ae57-44e7-a651-d097c8581021}precioUnit'],
            saveInto: {fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{eda9bda7-ae57-44e7-a651-d097c8581021}precioUnit'], a!save(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{53f231a2-9bf7-40a1-af07-74373fa7bd9f}importe'],if(
              or(isnull(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{b1b5fc0b-5be4-45be-8342-381cdc56017d}cantidad']), isnull(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{eda9bda7-ae57-44e7-a651-d097c8581021}precioUnit'])),
              0,
              fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{b1b5fc0b-5be4-45be-8342-381cdc56017d}cantidad'] * fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{eda9bda7-ae57-44e7-a651-d097c8581021}precioUnit']
            ) )},
            required: true,
            validations: {if(a!isNotNullOrEmpty(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{eda9bda7-ae57-44e7-a651-d097c8581021}precioUnit'])=false,"", if(
              fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{eda9bda7-ae57-44e7-a651-d097c8581021}precioUnit'] < 0,
              "El precio unitario debe ser superior a cero",
              ""
            ))}),
            a!integerField( value: fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{b1b5fc0b-5be4-45be-8342-381cdc56017d}cantidad'],
            saveInto:{fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{b1b5fc0b-5be4-45be-8342-381cdc56017d}cantidad'], a!save(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{53f231a2-9bf7-40a1-af07-74373fa7bd9f}importe'],if(
              or(isnull(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{b1b5fc0b-5be4-45be-8342-381cdc56017d}cantidad']), isnull(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{eda9bda7-ae57-44e7-a651-d097c8581021}precioUnit'])),
              0,
              fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{b1b5fc0b-5be4-45be-8342-381cdc56017d}cantidad'] * fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{eda9bda7-ae57-44e7-a651-d097c8581021}precioUnit']
            ) )},
            required: true,
            validations: {if(a!isNotNullOrEmpty(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{b1b5fc0b-5be4-45be-8342-381cdc56017d}cantidad'])=false,"", if(
              fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{b1b5fc0b-5be4-45be-8342-381cdc56017d}cantidad'] < 1,
              "La cantidad debe ser superior a cero",
              ""
            ))}),
            a!floatingPointField(
              value: if(
                or(isnull(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{b1b5fc0b-5be4-45be-8342-381cdc56017d}cantidad']), isnull(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{eda9bda7-ae57-44e7-a651-d097c8581021}precioUnit'])),
                0,
                fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{b1b5fc0b-5be4-45be-8342-381cdc56017d}cantidad'] * fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{eda9bda7-ae57-44e7-a651-d097c8581021}precioUnit']
              ),
              saveInto: {fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{53f231a2-9bf7-40a1-af07-74373fa7bd9f}importe']},
              required: true,
              validations: {if(a!isNotNullOrEmpty(fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{53f231a2-9bf7-40a1-af07-74373fa7bd9f}importe'])=false,"", if(
                fv!item['recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura.fields.{53f231a2-9bf7-40a1-af07-74373fa7bd9f}importe'] < 0,
                "El importe debe ser superior a cero",
                ""
              ))},
              align: "RIGHT"
            ),
            a!richTextDisplayField(
              value: {
                a!richTextIcon(
                  icon: "times-circle",
                  link: a!dynamicLink(
                    value: remove(local!data, fv!index),
                    saveInto: local!data
                  ),
                  linkstyle: "STANDALONE",
                  color: "NEGATIVE"
                )

              }
            )

          }
        )
      ),
      addrowlink: a!dynamicLink(
        label: "Añadir nueva Línea de Factura",
        value: append(
          local!data,                             
          'recordType!{6e637180-b344-49d2-a1f7-f87eed0041ba}CPF Lineas Factura'()
        ),
        saveInto: local!data
      )
    )
    ,
    a!buttonLayout(
      primaryButtons: {
        a!buttonWidget(
          label: "Completar Creación Factura",
          saveInto: a!writeRecords(
            records:local!data,
            onSuccess: {a!save(local!data, fv!recordsUpdated)  
          
            }
          ),
          submit: true,
          style: "PRIMARY",
          validate:true
        )
      },
      secondaryButtons: {
        a!buttonWidget(
          label: "Cancelar",
          value: true,
          saveInto: ri!cancel2,
          submit: true,
          style: "NORMAL",
          validate: false
        )
      }
    )

  }
)

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