Once PostPone = 0
Once BuyingConditionsAreSet = 0
Once  AllMyBuyingConditionsMeet = 0

It Not BuyingConditionsAreSet then
  // Sort out Buying Conditions here. If they are met, end with :

  BuyingConditionsAreSet = 1
  AllMyBuyingConditionsMeet = 1
endif

If AllMyBuyingConditionsMeet then
  PostPone = 2
Endif

[...]

If AllMyBuyingConditionsMeet then

  If not OnMarket and PostPone = 0 then
    Buy xyz Shares At Market
    BuyingConditionsSet = 0         // Reset.
    AllMyBuyingConditionsMeet = 0   // Reset.
  ElsIf Not OnMarket and PostPone > 0 then
    PostPone = PostPone -1  // Now wait for the next call. 2 actually.
  endif

endif

// BuyingConditionsSet and AllMyBuyingConditionsMeet seem redundant (do the same)
// but "underway" at downcounting PostPone, you may feel that conditions are
// not right anymore (the 3 of 1-2-3 never occurs), meaning that the conditions
// have been "set" all right, but you won't Enter. On the other hand, once
// you have definitely set the conditions, you may not want to look back and
// just wait 2 bars regardless. So it is a bit how you want all happening.

SVK, If you require a fully working code, then this is not for me. In that case the above may be helpful for others.
It is not that exciting. But when to reset and why, could be (very much).

Regards,
Peter

Edit line 9 : Cond4 = S1 < S1[1]