(Excel 2003) Using INDEX, SMALL, and ROW functions in a formula per the
examples in artical "How to look up a value in a list and return multiple
corresponding values". When I use the example verbatim, everything works
fine. But when I change the parameter for the comparison value to retrieve
from a different sheet in the same workbook, the formula no longer finds a
match.

example:
=IF(ISERROR(INDEX($A$1:$B$7,SMALL(IF($A$1:$A$7=$A$ 10,ROW($A$1:$A$7)),ROW(1:1)),2)),"",INDEX($A$1:$B$ 7,SMALL(IF($A$1:$A$7=$A$10,ROW($A$1:$A$7)),ROW(1:1 )),2))

changed to:
=IF(ISERROR(INDEX($A$1:$B$7,SMALL(IF($A$1:$A$7=TL! $C$2,ROW($A$1:$A$7)),ROW(1:1)),2)),"",INDEX($A$1:$ B$7,SMALL(IF($A$1:$A$7=TL!$C$2,ROW($A$1:$A$7)),ROW (1:1)),2))

The value in the referenced cell is identical to the value in the local
cell.

What am I doing wrong?