set 2 how many</span>
  <span style="color: #b22222;">! </span><span style="color: #b22222;">"vals" to expect.</span>
  <span style="color: #a020f0;">if</span> (proc_in_set1) <span style="color: #a020f0;">then</span>
     <span style="color: #a020f0;">if</span> (<span style="color: #a020f0;">associated</span>(m1%vals)) <span style="color: #a020f0;">then</span>
        nvals = <span style="color: #a020f0;">size</span>(m1%vals)
     <span style="color: #a020f0;">else</span>
        nvals = 0
     <span style=