The constructor should call super() with the height.

public TasksReporter(final String pattern, final String excludePattern,
final String threshold, final String healthy, final String unHealthy,
final String height, final String high, final String normal,
final String low)

{ super(threshold, healthy, unHealthy, pattern, "TASKS"); this.pattern = pattern; this.excludePattern = excludePattern; this.height = height; this.high = high; this.normal = normal; this.low = low; }