Tag with % as part of the name

I have strange problem. I have a tag with the name %track2%. The % are actually in the tag name. So everytime I try to get the tag for editing mp3 tag adds %%track2%% and this just returns "".
Is there a special unmasking sign for telling mp3tagger that the % is actualley part of the tag name ?

Best Regards Jim

Try to access the field with

Worked ! Thanks a lot. I tried everything %%track2%% %"%track2%"%.

You saved my day.