Integer can be any number. In my example we are using month as dimension and I had used 4 as an example to predict the values for next 4 months. Sameway based on your requirement you can enter a number. I hope this is what you need.
My Dates (Demension) are based on days and I have put 15 ( looking to get a further 15 days forecast) when I apply it to chart the X axis just extends but the plotting on the graph does not change , do I need to calculated the forcast manually ?