Thankabal I am really happy with your service. Also, I expect another service from you, that is to prepare a canvas so that it can be printed as a pdf and get a print using a Bluetooth printer or a printer connected to the phone via USB. It allows your customers to create many things like POS systems.
Hi @yasithmanukanewzic , welcome to Thunkable! 
Be sure to check out our posts about How to ask Great Questions v2.0 and our Community Guidelines as you get started.
Thunkable currently supports receiving data in String and Byte Array format from BLE devices, however we don’t have blocks specifically designed for printing to a device. It might be possible, depending on the device(s) and their ability to send this data through String or Byte Array format, however we haven’t tested and verified this so it would require some experimentation.