Error in Python scripting

Hello

I am trying to modify an odb through a python scritp buy I get the following error:

getSeqSeqDoubleFromArray() num dims (1) != 2

OdbError: illegal argument type for built-in operation

The code that returns that error is:

sfField1 = frame_sf2.FieldOutput(name='Name',description='Description', type=SCALAR)

sfField1.addData(position=INTEGRATION_POINT, sectionPoint=spBot, instance=o1.rootAssembly.instances[myInstance], labels=odbLabels, data=odbField_SNEG)

where odbLabels and odbField_SNEG are both tuples of numbers,

Thank you.