When creating a Selenium integration test case with Selenium steps by importing a JSON test script into DevTest Workstation, the first (Get) step is always defined like below:

The action for the Selenium step is defined as "type" with value "get" in this "JSON Object:" field. And the parameter for get action is the "url", the value of "url" is substituted by the property "ENDPOINT" in "JSON Object:"  field like:

the property definition for "ENDPOINT" is in the project.config file.

The value of a parameter can be substituted by a property. So I tried to add the "ACTION" property which value is "get" in the project.config file

and also change the "JSON Object:"  field like this:

to substitute the value of "type" by the property.

But I get error messages like below when playing back with Interactive Test Run:

============================================================================
| Error executing Selenium Step :
[{"negated":false,"type":"get","url":"http://myserver/mypath"}]
============================================================================
| Step:        Get
----------------------------------------------------------------------------
| Message:     No implementation class for step type "get" could be found.
----------------------------------------------------------------------------
| Trapped Exception: No implementation class for step type "get" could be found.
| Trapped Message:   java.lang.RuntimeException: No implementation class for step type "get" could be found.
----------------------------------------------------------------------------
STACK TRACE
java.lang.RuntimeException: No implementation class for step type "get" could be found.
    at com.sebuilder.interpreter.factory.StepTypeFactory.getStepTypeOfName(StepTypeFactory.java:96)
    at com.sebuilder.interpreter.factory.ScriptFactory.parseStep(ScriptFactory.java:99)
    at com.itko.lisa.glass.SeleniumStep.execute(SeleniumStep.java:321)
    at com.itko.lisa.test.TestNode.executeNode(TestNode.java:981)
    at com.itko.lisa.test.TestCase.execute(TestCase.java:1294)
    at com.itko.lisa.test.TestCase.execute(TestCase.java:1198)
    at com.itko.lisa.test.TestCase.executeNextNode(TestCase.java:1183)
    at com.itko.lisa.editor.WalkThruPanel.prepAndExecNode(WalkThruPanel.java:1085)
    at com.itko.lisa.editor.WalkThruPanel.access$900(WalkThruPanel.java:72)
    at com.itko.lisa.editor.WalkThruPanel$10.doCallback(WalkThruPanel.java:992)
    at com.itko.util.swing.panels.ProcessingDialog$2.run(ProcessingDialog.java:194)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: com.sebuilder.interpreter.steptype.get
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at com.sebuilder.interpreter.factory.StepTypeFactory.getStepTypeOfName(StepTypeFactory.java:89)
    ... 11 more
============================================================================

Is this usage supported?