https://devzone.nordicsemi.com/f/nordic-q-a/13093/send-data-on-an-notification-eventhello everybody, I need to send some data on the value attached with the notification: /**@brief Function for adding the notify Level characteristic. * * @param[in] p_notify notify Service structure. * @param[in] p_notify_init Informationen-USTelligent Community 13Tue, 12 Apr 2016 13:01:58 GMThttps://devzone.nordicsemi.com/thread/49933?ContentTypeID=1Tue, 12 Apr 2016 13:01:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:23475901-d457-4e01-9ab3-9c47c2ce9486Hung Bui<p>Hi mohamed,</p> <p>Please set <code>attr_md.vlen = 1;</code> and you will be able to have variable length not fixed length.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/49932?ContentTypeID=1Tue, 12 Apr 2016 10:14:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9b4334cc-472b-4fdd-af1e-22082e90aac6Mohamed O.Abouzeid<p>@HungBui yes, the change in maximum value of max lens will result in maximum integer of characters be sent in one notification, if that was greater than the string I need to send, it will send my string followed by a garbage values I don&#39;t need this, my string is variable and I want to let the maximum length to be set every notification or a way to let it controllable based on string lenght</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/49931?ContentTypeID=1Mon, 11 Apr 2016 14:05:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bb6719b8-5b4d-4c8d-a55e-d96df583d36aHung Bui<p>@mohamed: What happens if you change the max_len to something else ? Have you checked the return code when you call sd_ble_gatts_hvx() to send notification ?</p><div style="clear:both;"></div>