TITLE:A two-level second-stage moderated mediation
          path analytical model,w is level-2,x,m,y are level-1,
    DATA:
      FILE IS C:\Users\Administrator\Desktop\5.dat;
    VARIABLE:
      MISSING ARE ALL (-99);
      NAMES ARE x m w y cluster;
      USEVARIABLES ARE x m w y;
      DEFINE:CENTER w(GRANDMEAN);
      DEFINE:CENTER x(GROUPMEAN);
      CLUSTER=cluster;
      WITHIN=x;
      BETWEEN=w;
      ANALYSIS:TYPE=TWOLEVEL RANDOM;
      MODEL:
      %WITHIN%
      S | m on x;
      y on m(b);
              x;
      %BETWEEN%
      S on w(a1);
      [S] (a0);
      m on w;
      m with S;
      y with m;
      y with S;
      y with w;
      MODEL CONSTRAINT:
      NEW(ind_h ind_l);
      ind_h=(a0+a1*(0.85))*b;
      ind_l=(a0+a1*(-0.85))*b;
      NEW(diff);
      Diff=ind_h-ind_l;
      OUTPUT:SAMPSTAT;
      CINTERVAL;
我的语句这样，要做跨层次第二阶段被调节中介，x自变量，m中介变量，y因变量，这三个在level-1，w为调节变量，在level-2.运行后也出来TYPE=TWOLEVEL requires specification for the CLUSTER option.
请问应该怎么修改