Just to confirm no way to protect VB code

Summary

Just to confirm no way to protect VB code

Content

Hello,

Perhaps is a bit weird the question, but useful for us. I will try to explain.

Imagine my company develops a  VB app. not specific for a customer but a "cool" webapp that can be used in many, the same app. with no changes.

If a customers "buys" our app. we need to install in the customer servers so our code that required months of work is visible to everyone.

I would like to know if is there any way to "protect" the code. Almost sure no way but just to confirm and share.