why case BLE_GAP_EVT_DISCONNECTED: is not triggering?

[navid]

in android program i disconnect from my gat with this code

while(isconnected){
            mbluetoothGatt.disconnect();
            Log.d(TAG, "Disconnecttodevice: ");
        }
        mbluetoothGatt.close();
        Log.d(TAG, "close the gatt connection: ");

why the event BLE_GAP_EVT_DISCONNECTED: is not trigering it sometimes triger but most of the time its not trigering

[RK]

Is this not a duplicate of devzone.nordicsemi.com/.../why-event-case-ble_gap_evt_disconnected-is-nott-trigering ? Can you ask questions once please.

[navid]

sorry but its so important.its been 3 days that im in this problem