Hello @aisharpa
Welcome to the UiPath community…!
Are you trying to search in a particular column?
What you can do is, use the Read range activity to read the excel and get the result to a datatable variable. Then you can use the Filter datatable activity. There you can provide the value from the mhl file and the column to check.
If the output datatable row count is greather than 0, then the value is present. Else you can loop lookup activity as well.
Thanks