======Event_Attached======
This event is sent to the plugin after each implementation/start of the plugin.

The event cannot be disabled.

===Values===
  * **//(integer) windowhandle//** - Window handle of the current GRT main window
  * **//(string) languagecode//** - language code of the language that GRT is running in


===JSON-Source (Example)===
<code>
{
  "Event_Attached":{
    "windowhandle":"531876"
    "languagecode":"en"
  }
}
</code>