Manufacturing parts

Hi, is there any way i could change “Progress” from % to pcs. I am adjusting your product to my different needs for manufacturing.

What is pcs? --------------------

Oooopppppssssss… Pieces.

How do you measure progress in pieces?

If you type in order size 1000 pieces. and you have made 500 pieces. You can see 50% has been done.

What about 3 custom fields, 2 with data, 1 with custom formula?
AFAIK, “Progress” field data, is not automatically updated in GP at all, even with custom formula… (only calculated in summary tasks)