Edit. (S.T.A.L.K.E.R.: Shadow of Chernobyl)

Set out to make a range of tradesmen available immediately, not after the fulfillment of certain conditions under which this range is updated on the other. For example Sidorovich, I remove conditions at all, add anything in primary range, prescribed under [supplies_start] and [trader_start_sell], respectively. But the range remains the same and nothing happens, therefore that's doing wrong. Can anyone dabbled in this and prompt with anything?