Update eztag field value

[ahmed-bhs]

I'm trying to update a content wish have an eztag field value. I'm flowing the content updatethe documentation section https://doc.ezplatform.com/en/1.7/api/public_php_api_managing_content/#updating-content, unfortunately I'm getting this exception: Content fields did not validate

This is my code:

    $content = $this->repository->getContentService()->loadContentByRemoteId('bee932d48db96b7e10fd82ea3d3cfe0c');
    $tag1 = $this->tagsService->loadTag(67);
    $tag2 = $this->tagsService->loadTag(169);

    $contentUpdateStruct = $this->repository->getContentService()->newContentUpdateStruct();
    $contentUpdateStruct->initialLanguageCode = 'fre-FR';
    $contentUpdateStruct->setField('eztag_identifier', [$atg1, $tag2]);
    $contentInfo = $this->repository->getContentService()->loadContentInfo($content->id);
    $contentDraft = $this->repository->getContentService()->createContentDraft($contentInfo);
    $contentDraft = $this->repository->getContentService()->updateContent($contentDraft->versionInfo, $contentUpdateStruct);
    $content = $this->repository->getContentService()->publishVersion($contentDraft->versionInfo);

Any idea would be appreciated.