This should be simple but does not work. I would like to insert into the TITLE tag the track number. Currently there is a dummy string "#" in the title tag and I wish to replace it with the actual track number. I'm using the Replace with Regular Expression, where "Field" = "TITLE", "Regular expression" = "#", and "Replace matches with" = "$num(%track%,3)". This returns a value of '000'. I'm expecting the actual value of the track number padded with two zeros. How can I get this to work?