Map: Output None

Map: Output None

Hi,

Checking if you help me inspect this block
The code below triggers during  Successful form Submission from another Form.
//
rec_a = formA[ID!=0];
rec_b = formB[ID!=0];
ListA = List();
//subformA
for each recA in rec_a.ItemSubform
{
for each recB in rec_b.ItemSubform
{
MapA = Map();
MapA.put(recB.FieldB,recA.ItemA);
MapA.put(recB.FieldC,recA.ItemB);
ListA.add(MapA);
}
}
MapData = Map();
MapData.put("SubformRec",ListA);

otherPar = Map();
RecordAdd = zoho.creator.createRecord("Owner","AppName","xxxx",MapData,otherPar,"connect");