Where on the OKLAHOMA state tax return, do I subtract the $10,000 allowed for military retirement exemption?

How do I deduct the $10,000 military retirement exemption for the state of Oklahoma?  I've looked at 511-A, but the 19,868.58 that is the total amount earned from my military retirement, minus 10,000 should be 9,868.58.  The amount shown is 14,902.  

Thank you