PHP SOAP insert data StructType wsdltophp

I am working in a project where I must call SOAP WS. I used WSDLtoPHP, that's really helpful.

I can READ data, and now I would like to create new item with the web services. But when I tried to insert data in the field Nom, I have an error, because the soap server thinks I am trying to insert my data ($nom) inside the attribute NomVide of the field Nom, of the generated xml structure with my code:

<ven1:Nom NomVide="$nom"></ven1:Nom> 

    $createClient = $SC->S001_Creation_Client(new \StructType\S001_Creation_Client(
        new \StructType\RootWSReturnError(
            new \StructType\Header("","","","","",array(),"","","","","","","","","","","",array(),"",0,0,"",array(),array(),"","","","","","","","","","","","","","","","","","","","",0,0,"","",array(),"","","","",0,0,0,0,0,0,0),null),
        new \StructType\RootWSVenteParametres (array( new \StructType\Vente (array("secret_key")))),
        new \StructType\RootWSVenteClient(
            array(new \StructType\Client(
                    new \StructType\General(
                        "3333",
                        array(),
                        array(),
                        null,
                        new \StructType\Nom ($nom),
                        new \StructType\NomRecherche ($nomrecherche),
                        new \StructType\Nom2 ($nom2),
                        new \StructType\Marque1($marque1),
                        new \StructType\Marque2 ($marque2),
                        new \StructType\Adresse1 (),
                        new \StructType\Adresse2 (),
                        new \StructType\CodePostal(),
                        new \StructType\Ville (),
                        new \StructType\County (),
                        new \StructType\CountryRegion (),
                        new \StructType\CurrencyCode ($currencyCode),
                        new \StructType\CreditLimit ($creditLimit),
                        new \StructType\Blocked ($blocked),
                        new \StructType\PaymentMethodCode ($paymentMethodCode),
                        new \StructType\CustDiscGroup ($custDiscGroup),
                        new \StructType\SalespersonCode ($salespersonCode),
                        new \StructType\EquipeAgentCode ($equipeAgentCode),
                        new \StructType\LocationCode($locationCode),[...]

Logs of the SOAP server gave to me then I am trying to do this:

<ven1:Nom NomVide="$nom"></ven1:Nom>

And it is false of course...

BUT I NEED :

<ven1:Nom NomVide="">$nom</ven1:Nom>

Here is my StructType\Nom class code:

    class Nom extends AbstractStructBase
    {
        /**
         * The NomVide
         * Meta information extracted from the WSDL
         * - use: optional
         * @var string|null
         */
        protected ?string $NomVide = null;
        /**
         * Constructor method for Nom
         * @uses Nom::setNomVide()
         * @param string $nomVide
         */
        public function __construct(?string $nomVide = null)
        {
            $this
                ->setNomVide($nomVide);
        }
        /**
         * Get NomVide value
         * @return string|null
         */
        public function getNomVide(): ?string
        {
            return $this->NomVide;
        }
        /**
         * Set NomVide value
         * @param string $nomVide
         * @return \StructType\Nom
         */
        public function setNomVide(?string $nomVide = null): self
        {
            // validation for constraint: string
            if (!is_null($nomVide) && !is_string($nomVide)) {
                throw new InvalidArgumentException(sprintf('Invalid value %s, please provide a string, %s given', var_export($nomVide, true), gettype($nomVide)), __LINE__);
            }
            $this->NomVide = $nomVide;
            
            return $this;
        }
    }

Per example there is no problem with the value "3333", which is just a simple string type. I have this problem with all StructType type.

If someone knows how to help me