Gatt message for multiple notifications on multiple characteristics

[Fávero]

Hello!

I would like to know if it is possible to send an unique Gatt message that contains notification enable for multiple characteristics.

For example,

buf[0] = BLE_GATT_HVX_NOTIFICATION;
buf[1] = 0; 
write_params.write_op = BLE_GATT_OP_WRITE_REQ; 
write_params.handle = p_ble_lbs_c->bl_cccd_handle; 
write_params.offset = 0; 
write_params.len = sizeof(buf); 
write_params.p_value = buf;

err_code = sd_ble_gattc_write(p_ble_lbs->conn_handle, write_params);

This will enable notification for 1 characteristic. What I want to do is to write one message that contains notification enable for all my chars.