Silk [point payment] bug

[elitebi]

Hello, I noticed a bug in silk point [payment #16], that you can by pass the point easily

example:
DB refpricepolicyofitem

1    15    PACKAGE_ITEM_MALL_itemname    2    0    300    -1    xxx    -1    xxx    -1    xxx    -1    xxx
1    15    PACKAGE_ITEM_MALL_itemname    4    0    0    -1    xxx    -1    xxx    -1    xxx    -1    xxx
1    15    PACKAGE_ITEM_MALL_itemname    16    0    300    -1    xxx    -1    xxx    -1    xxx    -1    xxx 

Same for Media.
Everything appears normal in game and I can buy with point but you can press on the [P] in the item mall and change the point [use 0] and click buy and if you don't have point you will be able to buy,

is there a way to fix the ability to modify the point in client side?

[MentaL]

[elitebi]

anyone got some info?