How to calculate section 199A items for box 17, code V?

I'm trying to determine how to calculate the number to put in box 17 for code V of a Schedule K-1 (Form 1120S).  Historically the form mailed to me each year for the K-1 entity has provided a single number.  This year the form said for code V:  "STMT".  The "STMT" sheet provides amounts for Ordinary Income (Loss), Section 179 Deduction, W-2 Wages, and Unadjusted Basis, but no final number to enter.  Can someone help me determine how to calculate an appropriate single number, or provide a reference I can use to calculate the appropriate number?