Cant Read Float values coming from RFDUINO

[saadbutt67]

Hi @lann i am gonna update my problem statement it seemed a bit vague last time.
Code in RFDUINO so that everytime i send a value it sends me back the float value 2.34

include <RFduinoBLE.h>

void setup() {
RFduinoBLE.advertisementData = "ledbtn";
RFduinoBLE.begin();
}
void loop() {
}
void RFduinoBLE_onReceive(char *data, int len)
{
RFduinoBLE.send(2.34);
}

. when i try to do
byte[] ff = intent.getByteArrayExtra(RFduinoService.EXTRA_DATA);
Float.parseFloat(HexAsciiHelper.bytesToAsciiMaybe(ff))
i get the following errors

can you help me please?????