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1. Set a breakpoint
Select the fight breakpoint in the session interface right set breakpoints (select breakpoints)
2. Select the menu bar proxy -> Breakpoints Settings
Double-location following, in the open box, select the playing request to modify the request or response
3. reload the page to modify the content of the request is returned at the breakpoint, you can click execution
Note: If there are multiple interfaces breakpoint here, the need to modify manually the selection request, or restart Charles, the interface can display only the selected