Using the latest
FlashFXP v5.0 release you can do this with custom commands.
Code:
/select -f :age+30d
This instructs FlashFXP to select only files with a date/time older than 30 or more days.
Now to make this into a queue entry we can enqueue raw commands by right-clicking the file list and selecting enqueue > raw command from the popup menu.
The whole process is as followed:
1. Connect to the site where you want to perform this operation.
2. Enqueue the following as a single raw command.
(Click the down triangle on the raw command dialog to switch to multi-line mode)
Code:
/cd /folder/you/want/to/delete/from
/select -f :age+30d
/delete selected
3. Save the queue to a file.
Additional Information
The multi-line toggle button on the raw dialog was added in v5.0.0.3756
The reason we're doing this as a single raw command is because we want to abort the command block if the first command (/cd <path>) fails.