Thanks for the answer. But I think the problem is that in the buy condition I establish the buyprice also. And so, the tick size does not affect to the buy price.. So I need an Amibroker function that rounds the price into 0.25 points..
--- In amibroker@yahoogroups.com, James <jamesmemp...@...> wrote: > > I never define Ticksize in the formula. Make sure you have the > contract specifications set up in Symbol -> Information window. Tick size > should be set to 0.25. You can take PointValue and Ticksize lines out of the > code. > > > > > ________________________________ > From: Gonzaga <gonzag...@...> > To: amibroker@yahoogroups.com > Sent: Wed, November 25, 2009 2:25:10 PM > Subject: [amibroker] How do I use ticksize in futures? > >  > Hi > I'm trying to backtest a system in futures, in mini SP500, and have no > experience. > I see that I must use the ticksize in order to tell Amibroker the smaller > movement of the ticker, in this case 0.25 points. > I see that the constant 'tickersize' can obly be used with pre-defined stops > or Applystop, not with a user-programmed stop.. > Ok. But when I try a backtest, with the code: > > PositionSize = -2; // use 2% of equity > MarginDeposit = 2250; // mini sp > RoundLotSize = 1; // this you can set also in the Settings page > PointValue = 50; //multiply punto SP > TickSize=0.25; //least variation > > the system buys SP500 at e.g. 1153.37 > > I thought that Ami should buy at 1153.25 or 1153.50, isn't it??? > > Is possible to buy the future miniSP at 1153.37??? > > Thanks in advance.. >