Check if a value matches a list of values
Checks if lookup_value is equal to value_1, or value_2, etc. If a match is found, the index of the match is returned, otherwise 0 is returned.
Returns 1 if @NumberField is 10, 2 if @NumberField is 20, and so on, or 0 if no match is found
Returns 1000 if a match is found, 2000 otherwise