Input data format for Model Acceptability Criteria node

Hi,

I'm struggling with the input format for the Model Acceptability Criteria node, which seems to require vector-based input data.

I have a data set described by RDKit descriptors, and convert this to a bitvector using the Create Bit Vector node, but the Model Acceptability Criteria keeps complaining that 'Inputs 1, 2, and 3 should be vectors'.

How should I format the input data?

Thank you,

Evert