How can i resize an image with each click on it

#1

As title, i want to resize an image by click an button with event but all i know is an event called “Set size” and it only change the size one time to the exact size.
I want to set the size changed by 20px per click
Hope you can help me with this problem.
Thank you.

#2

image

#3

thank you so much ! you did save my life here !

closed #5

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