New to Java

Hi, I'm currently running the jsmsengine's SendMessage sample. I somehow managed to get it to work. However I find that the ability to send isn't as reliable as it seems. Most of the time, things are random when I set it to PDU mode.

But when I switch it to ASCII mode, sending seems to be reliable but the data that I want is encrypted. Is there a way around this? I was thinking of putting a timer before sending but it doesn't seems like a viable solution. I wanted to use a Do While loop to keep sending while there's an error and stop if there is not error. But they don't seem like a capable solution.

I was wondering if any of you have used jsmsengine and have encountered the same problem as I and have managed to have it solved. Thank you in advance.