Property "preload" is not allowed?

I searched around but didn't find anything..

{
  "_version": "1.1.0",
  "sap.app": {
    "_version": "1.1.0",
    "id": "xxx",
    "...": "..."
  },
  "sap.ui": {
    "_version": "1.1.0",
    "...": "..."
  },
  "sap.ui5": {
    "_version": "1.1.0",
    "models": {
      "": {
        "type": "sap.ui.model.odata.v2.ODataModel",
        "settings": {
          "...": "..."
        },
        "dataSource": "xxx",
        "preload": true
      }
    },
    "...": "..."
  },      
  "...": "...",
  "sap.platform.hcp": {
    "uri": "webapp",
    "_version": "1.1.0"
  }
}

That's my manifest. I always get an error on "preload": true in Web IDE saying:

Property preload is not allowed.

I read in some sites that it's because my version is maybe too old? And I don't really know how to change the version.

Is there a way to update the version? It's a cloud app and it stays on the cloud..

1. Change the value of the root _version to something higher than 1.3.0 according to the table AppDescriptor Release and SAPUI5 Version.
2. Remove all other _versions in namespaces such as sap.app, sap.ui5, ….
3. Reload the IDE.

Manifest model preload is available only as of UI5 version 1.38.0¹. And since 1.38 corresponds to the app descriptor version 1.4.0, Web IDE complains that preload is an unknown setting in 1.1.0.