> For the complete documentation index, see [llms.txt](https://docs.roomle.com/rubens/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.roomle.com/rubens/rubens-products/rubens-room-designer/recipes/adding-items-to-the-scene.md).
# Adding items to the scene
It’s possible to add additional products/items/configurations to the scene using the `insertObject` API:
```javascript
await interface.ui.insertObject('usm:frame');
```
By default the object is placed somewhere where it does not overlap with other items in the scene. You can also supply a position and a rotation for the object in the scene:
```javascript
await interface.ui.insertObject('usm:frame', { x: -3, y: 0, z: 3 }, Math.PI);
```
Position (2nd parameter) is in meters and the rotation (3rd parameter) is in radians.
### Gets called when something is changed in the plan
It is possible to implement a behavior which gets called when there is something changed in the plan. It gets all objects of the plan as parameter.
```javascript
interface.ui.callbacks.onPlanUpdate = (objects) => doSomething;
```
### React on specific plan element changes
You can react to certain plan element changes using the `onPlanElementChanged(changeType)` callback.
Depending on what happened, the `changeType` parameter can be:
* `added`: When a new plan element is added to the scene
* `removed`: When an existing plan element gets removed
* `changed`: When a plan element is changed, like rotated or moved. But also when it is added or removed
* `updated`: When the configuration of a configurable product inside the scene is updated.
You can try and play around with this example here: [(opens new window)](https://codesandbox.io/s/onplanelementchanged-l7jc5x?file=/index.js)
### React when tooltip is closed by controls button
You can react on any time when a tooltip is closed on controls button click As a parameter you get the name of the tooltip, e.g. "stopConfiguring"
```javascript
interface.ui.callbacks.onTooltipClose = (tooltipName) => doSomething;
```
---
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