How can I find the bode plot after edit my circuit?

Ben,

When you use the Schematic Editor in WEBENCH® Power Designer, you are allowed to change the topology. Since the circuit calculators are based on the topology of the circuit, you will lose access to the information that the circuit calculators provide. This includes the charts and the OpVals where the Bode Plot information is contained.

Additionally, the Schematic Editor only provides support currently for startup simulation of the edited circuit. We do have plans to allow AC simulations for the Schematic Editor circuits, however, we do not have that capability at this time.