Function SetValue

SetValue(source: object, key: string, value: any): boolean
Sets a value in an object, allowing for dot notation to control the depth of the property.

For example:
```
var data = {
  world: {
    position: {
      x: 200,
      y: 100
    }
  }
};

SetValue(data, 'world.position.y', 300);

console.log(data.world.position.y); // 300
```
Parameters
- source: object
  The object to set the value in.
- key: string
  The name of the property in the object. If a property is nested, the names of its preceding properties should be separated by a dot (.)
- value: any
  The value to set into the property, if found in the source object.
Returns boolean
- Defined in types/phaser.d.ts:121309