the reason why you cannot acces the values using row.a, row.b etc is that the keys “a”, “b” and “c” are stored as GStrings in groovy. However, accessing values using row.a, row.b etc. is only possible if the keys are Strings.
In order to solve your problem, you can simply modify the ResourceHelper.groovy file by exchanging this line:
map << ["$key": vals[i++].trim()]
with this line:
map << [("$key".toString()): vals[i++].trim()]
This transforms the keys to strings before they are stored in the map and thus they will be accessible as usual via row.a, row.b etc.
Don’t forget to remove the original ResourceHelper.groovy from your solution and then add your modified version of it to the solution!
We may in the future consider changing the ResourceHelper.groovy file permanently towards using strings as keys and then update the version we provide for download on teneo.ai accordingly.