Hi @Badie and sorry for the delayed response. I took a look at your workflows and I believe I fixed them.
KNIME_Denormalizer ANN(MLP Model)_SF.knwf (988.7 KB)
04_H2O_Crossvalidation_SF.knwf (1.3 MB)
For the Denormalization, you have to pay very close attention to how the columns are renamed, as described in this post:
For the H2O workflow, you just needed to use an H2O Numeric Scorer node instead, since this is a regression application. I hope this helps.