help for newbie

hi, I m doing my tutorial game but when I insert grass objective, it show like the picture attached below, Please clarify me whats wrong with this?

Kind regards,


In the object properties make sure you add an image to the object.
Double click on the object to open the properties.
In the properties window select the image on the left side and press the button on the bottom right corner to add the image and press OK to confirm it.