Hi @jeremyruston. yes, I realized that so I am looking for other workarounds.
The above problem is what I encountered when developing this plugin：TW5-CSEncryption: Client-Side Encryption for TiddlyWiki5 on Node.js
Although it is solved by abandoning the template and directly hardcoding it, but considering that it is not general enough to use the fields of subtiddler in the future, so I am posting to ask, but it should still be able to reference them through ViewWidget, although there are indeed limitations.