diff --git a/tcl/flexbox.addon b/tcl/flexbox.addon
new file mode 100644
index 0000000..7c00e54
--- /dev/null
+++ b/tcl/flexbox.addon
@@ -0,0 +1,7 @@
+addonDesc = Coils from MLZ
+
+set ::secop_version 4
+
+makenv secop -driver secop -port flexbox:10767
+
+