Hello everybody. I've a problem with inputs. When i simulate the program,it works fine. But in raspberry don't.

The problem is when i remain pushed a buttom the output don't refresh. I've tried a lot of options and all have the same problem. What is my error?
Captura.png  If remain SETT input pushed, QQ don't refresh until release the button.
Physically, i've a 10K pull down resistor on %IX0.4 and a button to +3,3V. 
In RESETT i've the same problem. 
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SOLVED. The problem was a cut cable. OpenPLC works fine. 
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I imagined it was something around that. I'm glad it is working now
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