Transmitter and receiver with a Button

I am having issues getting my program to run using the transmitter and the receiver for the arduino. The goal of the project I am currently working on is to press a button which activates a stepper motor., When the circuit is run without the transmitter and the receiver, everything works great. The program doesn’t run until the button is pressed. However, when I hook up the transmitter and receiver (using 2 arduino boards), the program runs on its own and the button does nothing. If anyone sees a problem with my code please let me know. I will attach the codes below as a download. Thanks guys.

Receiver_Program.ino (1.08 KB)

Transmitter_Program.ino (339 Bytes)

Functions.ino (1.41 KB)