Display Product Add to Cart Button without option 2

[icemanchai]

When I go to Admin > Product Listing > Display Product Add to Cart Button (0=off; 1=on; 2=on with Qty Box per Product), only option 0 and 1 showed but option 2 disappeared. Anyone can help?

My zen cart is 1.3.9h.

Thank you.

[icemanchai]

I just solved my problem with following procedure:

1. Log in phpMyadmin
2. Find table "configuration"
3. Search "PRODUCT_LIST_PRICE_BUY_NOW" in configuration key
4. Edit "set_function"
from
zen_cfg_select_option(array('0', '1'),
to
zen_cfg_select_option(array('0', '1', '2'),

Sql file in zc_install of 1.3.9h included this option 2, don't know why I could not upgrade this option from 1.3.5 even I upgrade the database every version after 1.3.9.