Can I copy and *append* tag data to another field ?

Hello,
I searched the forums and found this action example for copying data from one field to another (in this case AA to A):

Action type: Format value
Field: ALBUMARTIST
Format string: %artist%

Is there a way I could append to the new field instead of overwriting? I would like to append at the beginning, prefixing.

EDIT: DUmmy me, I found it.
It should be like this, right? (although the fields in this example make no sense :rolleyes: )

Action type: Format value
Field: ALBUMARTIST
Format string: %albumartist% (%artist%)
QUOTE (pastic @ Jul 29 2014, 03:20) <{POST_SNAPBACK}>
Hello,

I searched the forums and found this action example for copying data from one field to another (in this case AA to A):

Action type: Format value
Field: ALBUMARTIST
Format string: %artist%

Is there a way I could append to the new field instead of overwriting? I would like to append at the beginning, prefixing.

EDIT: DUmmy me, I found it.
It should be like this, right? (although the fields in this example make no sense :rolleyes: )

Action type: Format value
Field: ALBUMARTIST
Format string: %albumartist% (%artist%)<!--QuoteEnd--></div><!--QuoteEEnd-->

correct