Thank You for your response,
We tried with your approch by creating new collection and adding columns insude it.
ClearCollect(IssueObject,AddColumns('Issue Objection Assignments',"Edit","Edit","IssueObjectType",Concat('Issue/Objection Type',";")))
But , Now the datatable is showing only ;;; and not val1;val2;val3
Any thought what we did wrong?
Thanks
Sith