Hi, I'm having a problem sending multi part messages, adding custom user data header, adding ConcatenatedShortMessages8bit . At the moment of build the submit I get the correct message length
like the image bellow
![Image](https://www.teleprom.com/img/1.png)
But capturing the SMPP submit y see that I'm sending a wrong message length.
![Image](https://www.teleprom.com/img/2.png)
What I'm doing wrong?