To BadMario:
I have followed your instructions to make my character move by using the "Touch" object, and I have put the following code in the Event Sheet (The code in the image below). Can you tell me if this code work:
You also told me to create a variable called centerX and I did. I gave to the centerX variable 427 as a value, because my layout is 854 pixels wide, so 427 will be the center. Here's a picture of the variable: