Mirabilis Design

Mapper DS does not contain Task_Time field: Time

Hi,

I came across an error this morning while constructing a VisualSim Model. Error message is given below;

VisualSim.kernel.util.IllegalActionException: Mapper DS does not contain Task_Time field: Time
DS:
{BLOCK                = "Traffic",
DELTA                = 0.0,
DS_NAME                = "Header_Only",
ID                = 1,
INDEX                = 0,
TIME                = 0.0}
  in .<Unnamed Object>.Mapper
    at VisualSim.actor.lib.Task_Basic.nextTask(Unknown Source)
    at VisualSim.actor.lib.Task_Basic.fire(Unknown Source)
    at VisualSim.simulators.de.kernel.DEDirector.fireVisualSim(Unknown Source)
    at VisualSim.simulators.de.kernel.DEDirector.fire(Unknown Source)
    at VisualSim.actor.CompositeActor.fire(Unknown Source)
    at VisualSim.actor.Manager.iterate(Unknown Source)
    at VisualSim.actor.Manager.execute(Unknown Source)
    at VisualSim.actor.Manager.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:745)
    at VisualSim.kernel.util.VisualSimThread.run(Unknown Source)