Hey Mike,
If you haven't read this then it's worth taking the time:
Tip: How Do I Get The Best Answer in the Shortest Time?
Your question has no context and therefore can't be answered without speculating, nevertheless I'll have a go at it.
I'm guessing you're wanting to transition from an AppleScript action with a boolean result to a another Keyboard Maestro action where you can test that result.
Here's an example of that:
Test AppleScript Boolean Output.kmmacros (5.6 KB)
-Chris