To Upload a photo for a propertie "bacgroundimage", we add in schema a propertie "imgbase64_backgroundimage" with format "imgbase64" and aspect=[width,height] a ration of the image. Then it will make available on https://dns/objectimg/{objectname}/{apxid.value}_backgroundimage.png" and set propertie background at "objectimg/{objectname}/{apxid.value}_backgroundimage.png"

Example

    "imgbase64_backgroundimage":{
      "title":"Temporary background image for update or create",
      "aspect":[4,3],
      "description":"Propertie use to upload a base64 imagae that will be store, only use to create or update. The image file will be store in public as /objectimg/{objectname}/{apxid.value}_backgroundimage.png",
      "type":"string",
      "format":"imgbase64"
    },
    "backgroundimage": {
      "title": "A background image filename",
      "type": "string"
    }

Data to put or post in object sirets

 "imgbase64_backgroundimage": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAABAAAAAQACAIAAADwf7zUAAAgAElE....",
will provide
 "backgroundimage":"objectimg/sirets/img/34921281100021_companylogo.png"