Workbench is looking for Mathematica 9 instead of 12, how to change?

Just installed Eclipse and Workbench. Ran the following warning when opening TestProject.nb

Attempted to open the TestProject.nb from :

When installing the software, followed the steps here http://support.wolfram.com/kb/27221

Looked at Windows/Preference settings, but didn’t see anything obvious about Mathematica version numbers.

Could someone tell me what to change? Thanks!

Look under Window → Preferences → Wolfram