~~Title: OnFilesystemChange~~
<pageheader/>

The **OnFilesystemChange** event can be implemented by a [[:scripting:script_add-ins|script add-in]] to receive notification when monitored files or folders change. Monitoring is established by calling the **[[..:scripting_objects:fsutil|FSUtil]].WatchChanges** method.

<commandtable columns="2" id="cmdtable_1">
$$ (#)**Method Name:**
$$ OnFilesystemChange
$$ (#)**Argument Type:**
$$ **[[..:scripting_objects:filesystemchangedata|FilesystemChangeData]]** 
$$ (#)**Return Type:**
$$ //none//
$$ (#)**Description:**
$$ The **id** property indicates which watcher detected a change. Note that you aren't told what changed, only that something meeting the specified conditions did change.
</commandtable>