Could you explain what you are trying to do with that field from another table? Are you looking to pull one value from one record or pull up for example a summary or the most recent record's value, etc?
If I've understood correctly, to build a 'vlookup' using the value in a field in Table 2 (assume it's named Field 1) to find a match in Field 8 in Table 1 and pull back the value in Field 9, I think you'd need something like this:
Where x is the field ID of Field 8, y is the field ID for Field 9 and _DBID_TABLE_1 is the table alias of Table 1, which you'll find at the bottom of the advanced settings screen.
------------------------------ Jeremy Anson ------------------------------