Hi @minthodology
For joining the DataRow Values and Store it in Single String Variable then do as below within Assign Activity :-
String str = String.Join(",",dataRowVar)
So for writing βGoodβ in Last Column u can use Write Cell Activity Within ForEachRow and pass the Column Character :-
Also you can refer the below post :-
Mark as solution and like it if this helps you 
Happy Automation 
Best Regards
Er Pratik Wavhal 

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