Hi,

I am wondering on how to set value for MultiNodeTreePicker property with on Umbraco 8

I have tried the below code as a quick test:

 var content = contentService.CreateContent("TestPage", homeUdi, "article");
 var category = Umbraco.Content(2887);
 var categoryUDI = new GuidUdi("category", category.Key);
 content.SetValue("categories", categoryUDI.ToString());
 contentService.SaveAndPublish(content);

I got this error:

Multiple actions were found that match the request: GetByIds on type Umbraco.Web.Editors.EntityController GetByIds on type

Thanks