Max Evaluations

Key Max Evaluations in Yield Curve Bnd refers to the maximum number of evaluations of the parameters associated with the selected parametric fitting method that are allowed while trying to produce the optimal set of final parameters.
It may be also set to 0, in which case no calculation takes place and the produced curve is based on the given initial guess parameters.
This turns the produced curve into an evaluator of the parametric curve.
For example, this would allow you to use the parameters for a credit spread curve calculated with bonds in one currency to be coupled to a discount curve in another currency.