string formatting unlang

[Christian Salway]

I have the following 'update reply'

        foreach &reply:memberOf {
            update reply {
                Class += "%{Foreach-Variable-0}"
            }
        }

which adds a list of groups from active directory as distinguished names 

eg. CN=pod-admin,OU=Groups,OU=directory,DC=directory,DC=local

but I need it to add to Class as 

CN=pod-admin/OU=Groups/OU=directory/DC=directory/DC=local

Is there anyway to do this?

I was thinking of maybe passing it to a module that would rewrite it

"%{module: Foreach-Variable-0}"

but no idea how to do that.