Following code will help you that who have modified object last time with date. Copy code and paste it in job.
static void UserWhoModifiedObjectLastDateandTime(Args _args)
{
UtilIdElements tblUtilIdElements;
;
while select tblUtilIdElements
where (tblUtilIdElements.utilLevel == UtilEntryLevel::USR && tblUtilIdElements.recordType == UtilElementType::Form && tblUtilIdElements.name == "SalesTable")
{
info(strfmt("%1",tblUtilIdElements.modifiedBy + " " + datetime2str(tblUtilIdElements.modifiedDateTime)));
}
}