Receive Numerics with BLE

I can receive text with the BLE receive String function but can’t receive any numeric data.

If I try to read it with receive byte array it fails with “n is not a function. (In ‘n(void 0,f.t0.message)’,‘n’ is undefined)

Does anyone know what format the receive byteArray function actually requires as input and is there a way to receive numerics? I’d rather not have to convert all my numbers to strings before sending them.