for loop and user input in JES

I have a function

def decreaseRed(picture, amount):
    for p in getPixels(picture):
        value = getRed(p)
        setRed(p, value * amount)

I would like the function to ask the user to input the amount and then calculate that amount. I know this is probably simple but it has me stumped and I cant find the answer in a book.

Thank you


From the JES Guide:

amount = requestNumber("Enter Amount:")

You could also consider:

amount = requestInteger("Amount: ")


amount =requestIntegerInRange("Amount in range min-max:", min, max)

if you you want to constrain the possible values.

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