Check existing numbering and update field

Hello,

I'm new to Podio, and I'm trying to do an automation.

When creating an endorsement in the "Endorsement" application, check if there is an endorsement created with the same business number in the "Business ID" field.

If it exists, adding a number 1+1 =2 to the "Master Endorsement #" field, and so on.

Now if it doesn't exist, put the number 1 in the "Master Endorsement #" field

I did according to this example tutorial for duplicates, I tried to adapt to my reality. "https://workflow-automation.podio.com/blog/prevent-duplicate-entries-in-podio.php"

You are putting the number 1, passed only by the second IF.

Here's an image of how I did it.


Has anyone done something similar, or can I get a hint on how to do this?

Thanks