Why my notion data fomula correct but watch database wrong

actually i just want link my notion data to google doc by using make

but i dont know why all data is link correct except the last total fomula

bcz i already put formula at notion and the last total is correct

but when i link to make the data is wrong

format(prop(“Sub Total”) - prop(“Discount”))

but at the make watch database is wrong

Screenshot 2022-12-03 225935

make only get my discount but cannot get the correct number after subtotal deduct discount.

Any want can help me on this? thanks