Thank you so much for the help, Florian. I don't think it answers my question. I'm trying to create a custom action, not reuse one of the existing quick actions. For more context, I was trying to create a custom action that would allow me to set track numbers based on their file creation dates. I was attempting to follow these instructions:
MP3tag allows you to perform various operations using file properties, including the creation date. Here's how you can achieve this:
1. Open MP3tag and load the directory containing your MP3 files.
2. Select all the files you want to modify.
3. Go to "Tools" > "Actions" (or press Alt+6) to open the Actions dialog.
4. In the Actions dialog, click on the "New Action" button (or press Insert) to create a new action.
5. Give your action a name, such as "Set track numbers by creation date".
6. In the "Available functions" list, find and double-click on "Format value". This will add the function to the action list on the right.
7. In the "Format string" field, enter the following:
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$num(%_createtime%,1)*
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This function will assign track numbers based on the creation date of the files. The "%_createtime%" variable represents the file's creation date/time, and the "1" parameter specifies the starting track number.*
8. Click "OK" to close the Edit Action dialog.
9. Back in the Actions dialog, make sure your new action is selected, and click "Run Action" to execute it on the selected files.
10. After the action is completed, the track numbers will be assigned based on the creation dates of the files.
Note: Make sure that the files are sorted by creation date in the desired order before running the action. You can sort the files by clicking on the "Created" column header in MP3tag.
Once you've completed these steps, the track numbers should be set according to the creation dates of the MP3 files. Let me know if you have any further questions!