Display Buy and Sell price chart

I am a beginner of Amibroker, I have copied a code for display buy and sell price in chart. The code shows the purchase price and the stoploss in the chart when it has been effective, however in my chart he does not appear. I have seen that the code works well on another computer. I do not know if it is necessary to make any additional settings. If anyone can help me I would be very happy. Sorry for my bad english. Thank you.