Help please . Arduino Nano with BLE

I have written an app that works fine by sending from html to HM-10/nano on ios with plugins gathered by evothings.

I can't figure out how to send an inputted text line in a form to the arduino. I would like to send something like manually inputting "1234" instead of touching a button that has a predetermined value ( 1 or 0 )like this...

CONNECT

LED ON

LED OFF

// Application object. var app = {} // Connected device. app.device = null; // Turn on LED. app.ledOn = function() { app.device && app.device.writeDataArray(new Uint8Array([1]), '0000ffe1-0000-1000-8000-00805f9b34fb'); } // Turn off LED. app.ledOff = function() { app.device && app.device.writeDataArray(new Uint8Array([0]), '0000ffe1-0000-1000-8000-00805f9b34fb'); } How would I set up a form to send the manually input didgits?

Your problem has nothing to do with the Arduino. It has everything to do with the plugins (no clue what is plugged into what) on your PC. Ask your plugin provider.