Corelate blynk pin to MKR1010 actual pin

Projects Interfacing w/ Software on the Computer
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Maybe this is too huge to expect an answer here, but I can not understand how to code my sketch to connect the V1 (or digital instead of virtual) on my phone blynk app to the actual digital pin (say 9) on my MKR 1010. I have spent MANY hours reading on this and just not comprehending.
I have fishing buddies to discuss fishing problems, but at a fit 70, no arduino buddies!

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https://docs.blynk.io/en/getting-started/using-virtual-pins-to-control-physical-devices#how-to-control-the-physical-gpio-pins-on-my-board

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Thank you very much for your time Juraj. I have seen" int virtual_pin_value = param.asInt();" but thanks for the article to clear it up a bit. That is one key to my question. However I have seen other sketches that did not use that parameter and if I remember right, no virtual pins (V0,V1 etc) in calling for the same things with just digital pins. I appreciate the help that you all are providing on this forum.

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the old Blynk had direct pin control. The new Blynk IoT has only virtual pins

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Well thanks again! That ends that problem , now on to learning from your original answer!

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