Accessing public variable from form

This is probably dirt simple, but I'm stumped all the same.

I have two forms in the spreadsheet that I'm developing. One is an interface form used on startup so that users only have to look at the data they need. The other is used for data entry to the spreadsheet, with a Multipage that inputs header data from the first tab, and batch data from the second.

I'm trying to set it up so that the page that comes up on the second form changes based on how it's accessed. In order to do that, I've declared public variable intHeadBat in the interface form that is supposed to hold on to the page number it should access in the data entry form, like so.

Interface form:

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Data Entry form:

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For whatever reason, when it opens up the second form to start initializing everything, it doesn't seem to know that intHeadBat has a value in it. What am I missing here? Shouldn't it be accessible as a public variable based on the initial declaration?

Never mind. I was right, it was dirt simple. I'd delete the thread if I knew how.