Unable to connect scorer to the Parameter Optimization Loop End

Hi

I’m trying to set up a loop for my workflow, and following the Knime’s youtube toturial on how to set up Parameter Optimization Loop, I’m able to configure the Parameter Optimization Loop Start, but for some reason, I’m unable to connect my scorer to the Parameter Optimization Loop End.

I have attached the workflow on this link:

hub.knime.com

This is a link to the dataset:

https://archive.ics.uci.edu/ml/machine-learning-databases/breast-cancer-wisconsin/breast-cancer-wisconsin.data

Thank you.