The object is not displayed

Okay, as you can see I have a script. If the fourth and fifth lines are without the object’s id, the green cubes fall from the dropper, and if we insert the id of the cube that we published in Roblox by clicking on the object and on saving it to Roblox. Then we get the ID, then this ID I inserted in the fourth and fifth line, and drop objects from the dropper that then began to fall out that we can not see. That is, the text above them is how much they are, but the objects do not, although they have the same physics, as well as the blocks without an ID. That is green cubes. How to fix it?