How to control stepper motor in different ways?

Hi, I'm trying to understand how to use this Firefly. Firstly, I could have controlled servo motor with Firefly. Now, I'm trying to control stepper motor however I couldn't.

I use Arduino Nano and L293D. There is no problem in my circuit because it worked with Arduino IDE. I couldn't control it's with Firefly. I just can take a reading value but I cannot take a writing value. I will add my circuits photos.

What is my problem? Could you help me?