Thread.Resume
From Xojo Documentation
Method
Wakes up a thread that was paused because of a call to Thread.Pause or is sleeping because of a call to [Thread.Sleep]]. Every call to Pause must be matched by a call to Resume.
Notes
When you call Resume, the thread reacquires its ability to receive processing cycles according to its value of Priority. Calling Resume will not cause a context switch to take place, that is, a switch to the next thread in the queue.
Example
LongProcessThread1.Resume