Can you build a dynamic Drop Down on a Character sheet from data in Session State

Here's a challenge for some of you. API has stored data in state.  Can that data be accessed to build a dynamic drop down on the character sheet.  

Short anser is no, the API state and the character sheet have no direct interaction. Additionally you can't make a dynamic drop down on a character sheet. The slightly longer answer is that you can make a pseudo drop down that can dynamically react to repeating items being added, although it's a PITA. Using this, you could create a repeating section on the sheet that your api script would dynamically add/remove items to in order to create a dynamic pseudo select.

That's what I figured.  What I've done is sent session state (a vehicle target list) to chat and let them select vehicle off that.  Was hoping for a bit more elegant way.  Thanks Scott.