BLE Write strings Not Sending

MIT App Inventor Help
1

Hi,
Have written app for DSD Tech BT-01C V2 single relay with BLE extension 2020082 and BLE-device-sort.aix using write string with response.
The BLE connects but no data sent. data=A104D2010177AA.
If I send with nrf scanner it clicks the relay but not with the app.
No errors are reported just no switch of relay.

blocks (3)
blocks (3)722×1049 50.6 KB

Tried using all different write bytes, strings, list and so on but same issue.
Location and permissions granted.
Can anybody advise what I may be doing wrong in the App?

2

Hi All, Solved it with write Hex list works OK now.

blocks
blocks1404×854 110 KB

3

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