BLYNK_WRITE Arduino retrive slider value

Need Help With My Project
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I am trying to use BLYNK_WRITE to pull a slider value from blynk to my arduino, I want to use the values as control variables in my code, however when I try to use the BLYNK_WRITE function the sensor values published aren’t correct and the value from the slider is not retrived. Does anyone know how I may resolve this issue? Thanks

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Please post your code properly, as text, with triple backticks at the beginning and end, rather than as screenshots.
Triple backticks look like this:
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Pete.