"Cusstomized performance vector - F(B) score"

Instead of the particular F1 score, I'd like to calculate performance of bionominal classification based on F(B) score with a different B value which is described in here: https://en.wikipedia.org/wiki/F1_score

As it's not a linear equation, the "Combine performances" operator can't be utilized. Is there a way to do this in Rapidminer Studio?