Simple Viewport Graph Not Working as Expected

I created this simple graph to align several viewtitles at once based off the alignment on a selectable sheet. There are a couple issues I am having. The main issue is with the viewtitle selection itself. For example when I use the sheet selector to pick which sheet will be the template for the others to align their viewtitles to, it works till that point and aligns them. However, whenever I change that sheet to a different one, it deletes the viewport on that sheet from the project. The other question I have is the selection of all the viewports I want to align. Is there a better way to select specific sheets from the dynamo player? Right now I have to open the graph to select the sheets on the dropdown list selector.

Any help would be greatly appreciated!

Element Binding (see link).

If you run this graph in Dynamo player it will work as expected.