VNAV Won’t Engage

Device: iPhone 13
Operating system: 16.1.1

I’m flying MSP-YYZ right now, in the CJ9. I leveled off at FL290, and tried to engage VNAV so I don’t forget when we begin to approach Toronto. I got this message, saying VNAV won’t work while in climb, even though I’m maintaining my cruising altitude.

Any ideas?

Can we see your flight plan? Is there a future waypoint with a higher altitude than 29,000?

I was just able to figure it out. You’re right, I had 30,000 input into my flight plan. This can be closed.