How to Pass a Value to a Test Runtime

In case when it is required to pass some values to a test in command line, it is possible to do it like this:

In AUT VM arguments pass desired parameters as Java properties, i.e. add arguments:
```
-DpropertyName=propertyValue
```
Use ECL command substitute-variables (which uses org.eclipse.core.variables plugin) to get a property value:

// writes prop val to AUT workspace log
log [substitute-variables "${system_property:propertyName}"]

With aid of variables and user-defined procedures variables and user-defined procedures, this becomes even more convenient:

Create ECL context which consist of only one command, declaring global variables:

global [val prop1 [substitute-variables "${system_property:prop1}"]]
     [val prop2 [substitute-variables "${system_property:prop2}"]]
     [val prop3 [substitute-variables "${system_property:prop3}"]]

Add this ECL context to project’s default contexts in Project Settings
Access these properties in any ECL using $-syntax:
```
concat $prop1 $prop2 $prop3 | show-alert
```

Important

When AUT does not include org.eclipse.core.variables plugin and hence command substitute-variables fails, it is still possible to use get-java-property to get JVM system property value.