How to set Identity Variable in the Regression Model

We are trying to combine 2 regression models built on KNIME for one of our use-cases. For this, we need the identifier feature of the data set, to be able to combine the results of the models. Is there a way to set the identifier feature in KNIME, please let me know.

Thanks in advance.

Hi @mgp,
To combine results you can use the Joiner node. Take a look at the guide on how to use this node: