I have one big excel file that contains all of my data. How can I count all the rows that contains 3 "or" value conditions targeted with 3 different columns? I have to check the table if these columns have NULL values present and print the total count of rows that fill these conditions in an object expression. I can do this by using "where" in load script but then I don't have access to the other rows that this statement filters. How can I create a loop that goes through the whole table and checks if the row meet the "or" conditions and then stores the final count to somewhere that I can use in a object expression later.