Red stone unlocker

To activate the key you need to use commands in the block.below of a box to put in the command it tells you to type /set Redstone key block,and then whatever block you want.then you put the correct block that you put in the Redstone key block in an inventory spot down below. When put the correct block in it sends a redstone signal to red stone from behind or under.if you put the wrong block in it dosent send a Redstone signal.