How can i calculate the quantity of any item in sales voucher by specify the formula in BUSY?

If you want to calculate the item quantity in sales voucher as per specific formula then follow these steps:
Step 1: Go to administration section then click on configuration option.
Step 2: Choose features and option then select inventory tab.
Step 3: Here, Tick on item sizing information from item description then save the configuration.
Step 4: Now, Go to administration section then click on confguration tab.
Step 5: Choose voucher series configuration then select the sales option and click on main or other series as per requirement.
Step 6: Click on voucher configuration which appear in right side of screen then enable item wise description and click on configuration.
Step 7: Update the number of line for description then line numbers to pick item sizing infomation.
Step 8: Afterward, enable the specify formula then mention the formula to pick item quantity and save it.
Step 9: Next, go to administration section then click on master and select item tab.
Step 10: Choose modify tab and access the required master then enable pick item sizing information from item description and save it.
Step 11: Now, Go to transaction then click on sales voucher and select add tab.
Step 12: After select item, a item description window will appear. You need to update the data as per formula and the quantity will pick automatically.