Hello guys
I have the following command that I managed to get it working on a single cell
=IF(NOT(ISERROR(VLOOKUP(F2,DataExtract.xlsx!Week1[Email Address],1,FALSE))),"06/11/2017", IF(NOT(ISERROR(VLOOKUP(F2,DataExtract.xlsx!Week2[Email Address],1,FALSE))),"13/11/2017"...