想研究一个2-2-1的跨层次分析。具体模型如图所示
现在mplus代码如下：
TITLE: two-level type mome ethical leadership model,
        x w m are level 2, Y is level 1,
       Y has between-group variance;


  DATA:FILE is "c:\users\asus\desktop\1.dat";

  define:int=x*w;
         !center=grandmean(x w);


  VARIABLE: NAMES =x w m y Group;

           usevariables are x wm y int;



           cluster=Group;

           between=x w m int;

           within=y;


  analysis: type=twolevel;

  MODEL:%within%
        y on m;

        %between%
        m on x w int(a);

        perf on m (bb)
        x w int;

  model constraint: new(ind);
                    ind= a * bb;

  output: sampstat;
          cinterval;



结果出错：*** ERROR
  One or more between-level variables have variation within a cluster for
  one or more clusters.  Check your data and format statement.

     Between    Cluster ID with variation in this variable
     Variable     (only one cluster ID will be listed)

      ETHICALL   1
      SETHICAL   1
      ECCARING   1
      INT        1

现在我的数据已经group分好组，每个小组3个人。不知道问题出在哪里？
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