Make sure that you select the '''Custom Fitness Value''' from the list under the '''Standard Criteria''' section on the '''Optimization Criteria''' tab of the '''Exhaustive Search Properties''' window or on the '''Algorithm-Specific Properties''' tab of the '''Genetic Algorith Properties''' window (see [[Performing Optimization]]).
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<div style="background-color: #E3FBE5;">Note: '''!optimize by sarp ratio!''' default signal can be used as an example showing how to find the best parameters using custom criteria.</div>