<script>
//选择框：pzpn  选择框文本：pzpnwb
var pzpnfieldid = WfForm.convertFieldNameToId("pzpn");
var pzpnwbfieldid = WfForm.convertFieldNameToId("pzpnwb");
WfForm.bindFieldChangeEvent(pzpnfieldid , function(obj,id,value){
    WfForm.changeFieldValue(pzpnwbfieldid, {value: 
         WfForm.getSelectShowName(pzpnfieldid) });
}
});
</script>