Prompts in actions

Hi guys;

Im new to the tool, but I was searchng the forum and couldn't get the answer...

Is it possible to add prompts for user values in Actions? For example: I have a step when I set a value of a tag and I want ot be able to provide the value as the script runs (or just before it runs).

thanks.

This is not possible at the moment.

Would be great though - you could insert a check for album info/cover art as part of a general tag trimming script....

ok... then how can I achieve similar effect? via scripting?
let's say i want to ask myself if "mediatype" field is CD or VINYL and proceed with tagging.

thanks!