| id | The progress indicator's unique ID. |
| progress | A new progress value between 0 and 1. |
| description | An updated description of the progress indicator. If the the progress status has not changed, or you do not set a description, this is null. To clear the current progress description, pass an empty string such as "". |
Reports a running progress indicator's current status.
Note: Unless you call this function from the main thread using a synchronous progress indicator (see Synchronous), the changes are applied on the next application tick.