Please!!!!!!!!!!! give credit, press see inside for the blocks, put the define and custom block in your backpack, in order to do that drag a block or a sprite at the bottom of the scripting area, once you want to use them drag them out of your backpack, instructions, click create on the left side of your screen, lower your mouse to the up arrow on the bottom of the scripting area, click and drag the scripts out...
Click see inside...