I have been working with the RoboLab programs created by the Convict School to help me with a project of mine and to teach myself RoboLab. Recently I found the new work done by the school in 2002 (URL) download the files and placed them into the (...) (19 years ago, 13-Aug-05, to lugnet.robotics.rcx.robolab)
(...) This just was an forgotten bug that with older Robolab versions didn't harm. The solution is to remove the "Value of red container" and replace it by a blue container constant list ("User3") while selecting "RED". -Claude (19 years ago, 15-Aug-05, to lugnet.robotics.rcx.robolab)