I am backtesting a custom ticker which has a *Tick Size* of *0.5*. The prices that I have imported look like *10.0, 10.5, 11.0, 11.5* and so on. However, my indicator gives calculates values sometimes that gives values up to 2 decimal places like *9.72, 10.78, 11.31* and so on.

Currently to simulate the *BuySize* and *SellPrice* correctly, I am doing it manually in my backtest by rounding up or rounding down using a modified version of a function provided by @fxshrat on this forum, which looks like follows:

```
function RoundUpToTick(price, tick) {
result = ceil(price / tick) * tick;
return result;
}
function RoundDownToTick(price, tick) {
result = floor(price / tick) * tick;
return result;
}
BuyPrice = RoundUpToTick(shortStop);
SellPrice = RoundDownToTick(longStop);
```

However, I am wondering why Amibroker's in-built *Tick Size* functionality only works for *ApplyStop* (as stated here) and not for *BuyPrice* and *SellPrice* as well. Or maybe it does work like that and I am just missing it? Wanted to post here in case there was a simpler way to do it that I have not discovered.

Thanks for the help!