[Freeswitch-users] play_and_get_digits - with no invalid entry

<#>Hello, I need to play a prompt and get any digits if entered, but if there is no digit entered, simply continue. Basically I don't have any minimum entry required and there is no invalid entry. I use playAndGetDigits in my perl code but it doesn't accept 0 for min or an empty string for invalid_file. How can I achieve this behaviour? Regards, Ali