How do I do a $_GET request inside of a fromit hook snippet?

Here’s what I need to do:

I want to pass custom values to the form I am building.
On form submit, I want the form to give the user access to a particular file (in my case, a static resource pdf).

So I assume I should pass a variable to the static resource through a url like so:

In the above, 112 is the resrouce id of the form and 110 is the resource id of the final download (the static resource).
I want to do a $_GET and get the value from the url.
How do I do this in a custom hook snippet with formit?

You could add it as a hidden input field, and fill the value with a preHook.

Hey Shawn,

Thanks for the reply. I will try that out.
Congratulation btw on the new Modx release.
Just wanted to say that the work you’re doing to truly awesome. I really wish though you would post more tutorials on working with the Modx API. The documentation needs more examples and the community needs more tutorials. I have very basic PHP skills and this stuff is really hard for me.
Could you please make it easier for us to learn and get more out of Modx?