previousButtonMid
ID of the library message to display in the "previous" button. Do not use in conjunction with PreviousButton.
stringpreviousButtonMid (string)nullable
ID of the library message to display in the "previous" button. Do not use in conjunction with PreviousButton.
Possible values: Value must match regular expression ^(MS_[a-zA-Z0-9]{11,15})?$
Example:
MS_abcdefg12345previousButtonMid
"MS_abcdefg12345"