Is it possible to update the values of variables through web browser in listen mode?

[ScruffR]

Yes, that is possible and I have provided some code that illustrates that in some thread already.
I'll try to find the respective thread.

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Update:
Here it is

Photon SoftAP Inputs

There would be multiple ways to do that, but I just needed a quick and dirty “extension” of the SoftAP demo to take an input and pass that back for my application task. So I just added an extra /control.html which contained the extra settings I desired as a <form>...</form>. But you can do that just as well in the original /index.html. The only thing you’d have to do is to capture the const char* url and distill the form data you are interested in out of the URL and then strip off that extra s…