You have missed to mention about Range_lookup
(Taken from Excel help)
The V in VLOOKUP stands for vertical. Use VLOOKUP instead of HLOOKUP when
your comparison values are located in a column to the left of the data that
you want to find.
Syntax
VLOOKUP(lookup_value,table_array,col_index_num,range_lookup)
Lookup_value The value to search in the first column of the table array
(array: Used to build single formulas that produce multiple results or that
operate on a group of arguments that are arranged in rows and columns. An
array range shares a common formula; an array constant is a group of
constants used as an argument.). Lookup_value can be a value or a reference.
If lookup_value is smaller than the smallest value in the first column of
table_array, VLOOKUP returns the #N/A error value.
Table_array Two or more columns of data. Use a reference to a range or a
range name. The values in the first column of table_array are the values
searched by lookup_value. These values can be text, numbers, or logical
values. Uppercase and lowercase text are equivalent.
Col_index_num The column number in table_array from which the matching
value must be returned. A col_index_num of 1 returns the value in the first
column in table_array; a col_index_num of 2 returns the value in the second
column in table_array, and so on. If col_index_num is:
Less than 1, VLOOKUP returns the #VALUE! error value.
Greater than the number of columns in table_array, VLOOKUP returns the #REF!
error value.
Range_lookup A logical value that specifies whether you want VLOOKUP to
find an exact match or an approximate match:
