App embedded in Wordpress iframe

Is it possible to pass a value from a wordpress site into an appsheet app when the app is embedded in the wordpress iframe?

Say I wanted to click a link to select something. The link took me to the app and initialized the field with the value I selected. Is this possible? If so, how?

I know you can do this inside the app using LINKTOFORM but was wondering if you can use the same logic from outside the app?

Keep in mind, I’m using a No Sign In Required App.

Thoughts?