How to get the Work Terms Number for an assignment?

Summary

I am trying to use HSDL for correcting assignment information for some employees which requires the Work Terms Number and i am unable to find it out

Content

I am trying to use the spreadsheet templates for updating assignment information. For example, i need to update the Regular/Temporary field on about 200 employees. I created the spreadsheet template for that, but that requires a field called Work Terms Number.

How do i get the work terms number for an assignment or an employee?

I can see that there is a field Work Terms Assignment ID in the assignments table, but i guess this field Work Terms Number is different.