Potentiometer not working properly?

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i wired up, 1 outside pin +5v, other outside pin ground , middle pin analog input. im trying read values potentiometer, tried changing code , copying , pasting code thats not problem. (i'm new electronics not programming). potentiometer reading random values, , when put hand near change lot more. changing dial barely anything, values changing. potentiometer broken?

tell potentiometer value (between outsides pins).
show code.


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