So I'm working on this new Minecraft project and it involves a lot of command blocks and dummy variables. For some reason, this one does not want to work and I do not understand why. In the image, you can clearly see I have the required points for this variable check and the variable check does not output any signal at all.

Is the syntax an issue or what? I'm eager to know why I am incorrect here.

  • What is your question? like are you asking what is the problem with your commands/code? I'm confused.
    – user47129
    Sep 10, 2013 at 1:07
  • @Scootaloo Look at the "Previous Output" in the screenshot: this command looks fine, yet is resulting in "Unknown command". That's weird. Sep 10, 2013 at 1:18
  • I get "That player cannot be found" when running this. (Note I do not have this variable in the scoreboard.) Do you have the latest 13w36b? It was hotfixed twice, and that may have made this behave differently? Sep 10, 2013 at 1:32
  • Have you also checked the scoreboard doesn't have a typo? Sep 10, 2013 at 1:38
  • 2
    I would suggest posting all of the commands you used to set everything up. Add it right to the question.
    – MBraedley
    Sep 10, 2013 at 16:57

3 Answers 3


The problem seems to not be your command, but your clock.

With a comparator clock the redstone dust it is directly feeding to will alternate between 15 and 2 power, and the next dust between 14 and 1. You need to go one dust further out to have a dust which will actually turn fully off and on.

  • Alternatively, you can reduce the input power of the comparator by moving the redstone block further away. Note that moving it only by one will still put signal strength 15 into the comparator.
    – MrLemon
    Apr 6, 2015 at 12:12

Don't put / before your command on a command block

  • Commands work just fine with and without slashes. Tested previously in 13w36b and retested just now in 13w39b. Oct 3, 2013 at 15:36

Try testfor @p[score_Lobby2UpperADoor,min=1]

  • Why should he try this? Why will this fix it?
    – Frank
    Apr 6, 2015 at 14:26
  • No, this is incorrect syntax. It's a horrible answer, and Shockwave's command is right, he's just not properly powering the block. Dec 21, 2015 at 0:40

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