Olá! Use o Google Translate para traduzir isso.
First, you should never use a comma as a decimal separator in trigger expressions, trigger values and constants -- only use a period (.). That concerns your aposta constant.
Second, BetFair can adjust your bet's price if, by the moment you place it, the prices in the market have changed and are now better than your offer. So, for example, if you back at 1.45 and the price in the market is now 7.0, the exchange will automatically adjust your bet to 7.0, and there is nothing you can do about this. This often happens in In-Play markets. You can check if this is the case by looking at the trigger log: it records the price at which the trigger intends to bet, and this price may be different from the one the bet was matched at.
