Defect report: substring renaming

Hello Nabocorp
The new (and potentially fabulous) %{substr:m:n} feature for renaming gives problems when trying to set it in the transfer options. I cannot add it to the mask by clicking on it in the list of options and if I enter it by hand I get the message "invalid padding specification". It works fine from Advanced Renaming.
The new (and potentially fabulous) %{substr:m:n} feature for renaming gives problems when trying to set it in the transfer options. I cannot add it to the mask by clicking on it in the list of options and if I enter it by hand I get the message "invalid padding specification". It works fine from Advanced Renaming.