Filtering Files Using 'answer file with type'
Now we will use the file extension we just created to create a Filter for 'answer file with type'.

In the message box paste the following:
put glxapp_fileTypeFilterFromExtension("Text Files") into theFilter
answer file "select text file" with type theFilter
Press the Enter key to execute the RevTalk code.
A Dialog Appears

A file selection dialog appears that only allows you to select files with a .txt extension.
The glxapp_fileTypeFilterFromExtension call returned the string:
Text Files|txt|
This string tells 'answer file with type' to only allow text files. For more information on handlers that help you to work with files see the API documentation for Files.
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