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Alter form data using the beforesubmit event
According to the documentation of the event beforesubmit in Ext.form.Panel , I should be able to modify the values submitted, but I can't figure out how.
I've tried modifying the variable values, but this has no effect.
Implementations may adjust submitted form values or options prior to execution.
Any help is highly appreciated.
Note: I'm basically trying to send a JSON string, so I need to encode the values using JSON.stringify.