Boolean array not changing every time for loop runs

[Joules15]

I'm trying to make a stepper motor go forwards and ackwards for a certain number of seconds but when I do this code the boolean array does not alternate. I've tried the same setup but just with a signal in the program and it works so I do not understand why it doesn't work in this setting. 

[SabariSaravanan.M]

Check Boolean array indexing on for loop. It executes based on input terminal counts, suppose one of the Boolean array is having only one element in an array it'll execute at once.

[Joules15]

indexing is on on the loop. 

[crossrulz]

You inner loop will never stop because the stop button is only read before the FOR Loop even starts.  You need to move the control to be inside of the While Loop.  Then, when you press stop, you will see the opposite condition.