You can do this with a UI post load event (v2015+) but it requires a little DFDM trickery to make it happen.
Refer to this post to see how it is done.
https://90minds-com.socialcast.com/messages/39274905?ref=stream
Below is the code to make the change. Change ""Export"" to your printer name.
```
sReportTitle = """" : oUIObj.GetValue ""ARG_3$"", sReportTitle
If sReportTitle = ""Item Listing"" Then
oUIObj.InvokeChange ""DB_Output$"", ""Export""
End If
```
Attached image shows what the record in CM_UIScriptSettings should look like. LibraryName$ and PanelName$ MUST be uppercase.
This was tested on v2018.0