Kickr bike and simulating gradients in erg mode?

I am lucky to have a reconditioned kickr bike v2. I am in the middle of my TP for a trip to Calpe and lots of climbing. My training is in erg so i never really get to benefit from the tilt meachanism and simulate climbs. I suppose i could ride in sim mode- using the TD TP in Zwift and just watch the numbers. But these are longish rides made easier by Youtube so i am never really concentraing on the numbers. Am i missing a trick? Is there an easyy way to get Erg and the bike to work in a way that allows me to ride an incline rather than just feel resistance from the bike? I suspect i have to ride in sim mode but asking just in case.

Yes just press slope on our UI. Then press up/down at the bottom. You can also design different slopes in our workout editor.

I misread the title. Slopes are not possible in ERG mode that I know of.

No worries.
You can when using erg in Wahoo systm/sufferfest but that is because the files are specifically coded to allow it.