Lens data Vertical Anamorphic

Hi everyone,
Hopefully someone can help me out here. So I'm shooting vertical anamorphic on the BMCC 6k. The lenses that I'm using are the Atlas Mercury lenses which have a 1.5x squeeze ratio. Now, in the lens data I want to enter the correct focal length, because I love the idea of getting rid of the rolling shutter a bit by using the Gyro Stabilise function, which relies on that bit of lens data.
What do I enter as a focal length, considering it's a 42mm lens, with a 1.5x squeeze ratio, mounted vertically?
I have no idea..
Thanks,
Mx
Hopefully someone can help me out here. So I'm shooting vertical anamorphic on the BMCC 6k. The lenses that I'm using are the Atlas Mercury lenses which have a 1.5x squeeze ratio. Now, in the lens data I want to enter the correct focal length, because I love the idea of getting rid of the rolling shutter a bit by using the Gyro Stabilise function, which relies on that bit of lens data.
What do I enter as a focal length, considering it's a 42mm lens, with a 1.5x squeeze ratio, mounted vertically?

Thanks,
Mx