<｜begin▁of▁sentence｜>### Instruction:
As a Telemedicine Physician providing remote consultations, imagine you're in the midst of assessing a patient's progress halfway through their treatment plan. Utilizing a progress tracking tool akin to ProgressBar in Python, you need to update the interface to reflect the current status accurately. How would you employ the ProgressBar's update function to indicate 50% completion while displaying the message 'Halfway done'?
### Response:
from progressbar import ProgressBar

# create a ProgressBar instance
pbar = ProgressBar(maxval=100)
pbar.start()

# update the progress bar to 50%
pbar.update(50, 'Halfway done')

# finish the progress
pbar.finish()
<|EOT|>
