Replace Strings

[scharrin2]

Hello,

I want to import files from an other system to paperless-ngx. The only way to store information from the source system is the filename.
In the source system I have to replace special characters by characters which are allowed in filenames. For example I replace the : with a @1

Is there a way to define a ruleset to reverse this replacement in the metadata tag title?

So in my case replace @1 by :

Best regards,
Christian