Callback error

I Takayuki, how are you?

I’m working on the new callback, because the other on_sent_ok is deprecated, but for me it’s giving error, it only works when I use the default of this example: var wpcf7Elm = document.querySelector (‘.wpcf7’); , but when I change to wpcf7Elm = document.querySelector (‘#wpcf7-f35-p32-o1’); returns me the error “Null”, what should I do? What I need is to differentiate site forms in callback, because I have three forms on my site. Thank you!

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