Added paragraph about adding variablesfrom Java
Signed-off-by: Dimitris Kolovos <dkolovos@cs.york.ac.uk>
diff --git a/mkdocs/docs/doc/articles/run-epsilon-from-java.md b/mkdocs/docs/doc/articles/run-epsilon-from-java.md
index de978cc..8963776 100644
--- a/mkdocs/docs/doc/articles/run-epsilon-from-java.md
+++ b/mkdocs/docs/doc/articles/run-epsilon-from-java.md
@@ -61,6 +61,18 @@
model.dispose();
```
+## Adding Variables
+
+You can add variables to your Epsilon program and provide their values from Java as shown below.
+
+```java
+EolModule module = new EolModule();
+module.parse("s.println();");
+module.getContext().getFrameStack().put(Variable.
+ createReadOnlyVariable("s", "Hello World"));
+module.execute();
+```
+
## Analysing Epsilon Programs
As of version 2.3, Epsilon programs can be analysed using [visitors](https://en.wikipedia.org/wiki/Visitor_pattern). As an example, see the `EolUnparser` class which recursively visits the contents of an `EolModule` and pretty-prints it. To implement your own analyser, you will need to implement the `IEolVisitor` interface for EOL, or the respective `IE*lVisitor` interfaces for other Epsilon-based languages. Using a combination of `E*lUnparser` and your custom visitor, you can easily rewrite Epsilon programs too.
