Is it possible to hide an DataView

 I have wrapped a dataview in an If condition.

 

      <If test='#table_type.equals("VIEW")'>
        <DataView id="cockroachdb-view-source" icon="Source" label="Source" viewer="text">
          <Input name="dataColumn" value="CreateView"/>
          <Input name="formatSQL" value="true"/>
          <Command idref="cockroachdb.getViewSource">
            <Input name="database" value="${database}"/>
            <Input name="view" value="${view}"/>
          </Command>
        </DataView>
      </If>

Is this possible to hide the dataview this way?  I get the following error in the Debug Window:

 

2018-03-30 16:01:27.481 INFO   352 [ExecutorRunner-pool-2-thread-10 - K.ￄﾁ] Evaluate expression: '#table_type.equals("VIEW")'
java.lang.NullPointerException: target is null for method equals
	at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:862)
	at ognl.ASTMethod.getValueBody(ASTMethod.java:73)
	at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
	at ognl.SimpleNode.getValue(SimpleNode.java:190)
	at ognl.ASTChain.getValueBody(ASTChain.java:109)
	at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
	at ognl.SimpleNode.getValue(SimpleNode.java:190)
	at ognl.Ognl.getValue(Ognl.java:333)
	at ognl.Ognl.getValue(Ognl.java:378)
	at ognl.Ognl.getValue(Ognl.java:357)
	at com.onseven.dbvis.sql.K.ￄﾁ(Z:2082)
	at com.onseven.dbvis.sql.K.ￄﾁ(Z:244)
	at com.onseven.dbvis.sql.K.ￄﾂ(Z:3235)
	at com.onseven.dbvis.objects.xml.L.ￄﾁ(Z:21)
	at com.onseven.dbvis.objects.xml.L.ￄﾂ(Z:934)
	at com.onseven.dbvis.objects.xml.L.ￄﾁ(Z:2545)
	at com.onseven.dbvis.objects.xml.L.ￄﾁ(Z:2833)
	at com.onseven.dbvis.objects.xml.L.ￄﾁ(Z:2833)
	at com.onseven.dbvis.objects.xml.L.ￄﾂ(Z:1479)
	at com.onseven.dbvis.objects.xml.L.ￄﾂ(Z:728)
	at com.onseven.dbvis.sql.V.ￄﾁ(Z:750)
	at com.onseven.dbvis.db.I.L.ￄﾃ(Z:1579)
	at com.onseven.dbvis.db.I.H.ￄﾴ(Z:1849)
	at com.onseven.dbvis.db.I.K.ￄﾴ(Z:3063)
	at com.onseven.dbvis.db.I.D.ￄﾨ(Z:1756)
	at com.onseven.dbvis.K.C.W.ￄﾠ(Z:2613)
	at com.onseven.dbvis.K.C.J.ￄﾂ(Z:1374)
	at com.onseven.dbvis.K.C.J.doInBackground(Z:1521)
	at javax.swing.SwingWorker$1.call(SwingWorker.java:295)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at javax.swing.SwingWorker.run(SwingWorker.java:334)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

 I have the table_type defined in the group node.

 

        <GroupNode type="Views" label="Views">
          <DataNode type="View" label="${cockroachdb.getViews.table_name}" isLeaf="true">
            <SetVar name="view" value="${cockroachdb.getViews.table_name}"/>
            <SetVar name="table_type" value="${cockroachdb.getViews.table_type}"/>
            <Command idref="cockroachdb.getViews">
              <Input name="database" value="${database}"/>
            </Command>
          </DataNode>
        </GroupNode>

 

Hi Roger,
I seem to remember you telling me this before.  Thanks for your help.
Nathan