resolveNodes method will only return a list of objects which you need to loop through.

In your screenshot, you havent set the (object) to anything which is why the ok button is grayed out. Set it to the subform you wish to show/hide. I didnt have any issues having multiple actions. Just need to make sure you complete the information in the dialog correctly

When you need to change the layout of a document in any way, you need to save the pdf as a dynamic pdf. You currently have it saved in designer as a static pdf which is why nothing happens. Just do a File->Save As and select Dynamic PDF from the list. When you preview it next time it will switch ove...

Looks ok from here. Do you have a sample pdf you can post somewhere and I can take a look at? Are you looking at the form in pdf preview or something else?

In your form design you will first have to add a subform to contain the fields you wish to hide/show either below or to the side of your dropdown list. Set this subform to invisible or hidden to start with. Then use the action builder to apply an action to your drop-down list. To define an action fo...