Doesn't buy potions unless I debug the code

[lotherad]

Gotta code like that on auto 6000ms to buy potions for mlvl training:

Code:

Misc.ItemCountEx(268)<1 [BuyPots]
Self.Say(Hi)
Macro.Wait(2000)
NPC.Say(Trade)
NPC.Buy(268, 100, 1)

The thing is that it doesn't buy potions but when I click "Debug" on it, it does buy.