ScriptAddinIcon64EA-Matic is an add-in for Sparx Enterprise Architect that enables rapid EA add-in development.

It uses the built-in scripting features of EA to relieve you of developing, building and deploying full-blown EA add-ins.

Aimed at corporate environments it greatly reduces the time to introduce new functionality.

With EA-Matic you can develop your EA add-in using nothing but EA, and deploy changes instantly to all model users.

The possibilities are endless. You can validate your own modelling rules, keep your model consistent by preventing the deletion of elements that are still used, add your own context menus, or make self-maintaining diagrams. The only limits are those of your imagination.

The table below shows how add-in development with EA-Matic differs from classic add-in development.

EA-Matic Classic add-in development
Required tools Only EA Visual Studio, Sharpdevelop, or equivalent IDE
Installation of a new version Instantly available for all users without the need to install anything again on the workstations. Msi-deployment on all workstations
Languages VBScript, JScript, JavaScript VB, C#
Security access on development machine Normal user rights are enough. Local Administrator rights required.




EA Imvertor is part of the Bellekens EA Toolpack which includes other useful add-ins such as

When installing you can choose which of the tools you wish to install.

Bellekens Toolpack Installer



This one minute video will show how easy it is to create a new add-in for EA using EA-Matic

These steps below show you how to repeat the the steps from the introduction video on your own.

First make sure you have a script ready to use by EA-Matic.

EA-Matic new script

Add EA-Matic in the comments of the script and save it. Only scripts that contain EA-Matic will be considered by EA-Matic.


Open up the EA-Matic dialog with the menu option Extensions|EA-Matic|Settings.

EA-Matic Settings

On the left there’s a list of all add-in events you can subscribe to. Check each event you wish to add to the selected script.

Close the Settings dialog and press the refresh scripts button in EA

EA-Matic Refresh Scripts


Now open the the selected script and notice the newly created function(s)

function EA_OnContextItemDoubleClicked(GUID, ot)
'Add code here
end function

Add your functional code to the script and re-open the settings dialog to load your new code into EA-Matic. All changes to scripts are automatically loaded into EA-Matic every 5 minutes, but opening the settings dialog forces a reload of the scripts.

function EA_OnContextItemDoubleClicked(GUID, ot)
  MsgBox("Hello World")
end function

Now you can test the new code by double-clicking an element in your model.

How it works

Enterprise architect uses operations with well defined names as “events” to trigger when something in EA happens. In order to subscribe to such an event an operation with this particular signature needs to be implemented in the add-in. The EA-Matic add-in catches all the events, and forwards them to the scripts if a function with the same signature exists.

EA-Matic how it works

EA-Matic also forwards the events to the local scripts that are loaded from the installation folder, and to any scripts defined in an MDG technology.

Frequently Asked Questions

Why is my new script not showing up in the EA-Matic script dropdown?

There can be two reasons:

  1. You forgot the EA-Matic keyword
    make sure that your script contains the keyword EA-Matic somewhere in the comments of a the script like this:

  2. There is an error in the script
    If the script interpreter cannot interpret your script then it will not show up in EA-Matic. Make sure that you have solved all issues, and that your scripts runs fine by calling them directly in the EA scripting environment.

Why is my script executed when I start EA or when I start EA-Matic?

You have top-level code in one of the EA-Matic scripts. When loading the EA-Matic marked scripts EA-Matic will need to interpret your scripts.
Interpreting script code means executing the top-level code. If you have code like the example below the messagebox with “Hello World” will show up every time the scripts are reloaded by EA-Matic because the call to execute main at the last line is top level code that will be executed.


sub main
MsgBox("Hello World")
end sub


Remove the last line calling main to avoid this problem.

Open Source

This software is free and open source under the FreeBSD license.

The code is managed on Github