Blinds inverted between alexa and openhab

I am having a strange problem with my blinds in openhab 3.

I created the blinds a a dimmer device so i can set percentages.

The percentages are reversed between openhab and the shelly 2.5. So, when i set it to 20% the shelly sets it to 80%.
Alexas commands are not inverted setting it to 80% via alexa stes the shelly to 80% and openhab to 20%

The items are not inverted in the alexa metadata and inverting them does not change anything.
Can someone help?

Are you triggering a discovery on the Alexa side every time you are making changes to your Alexa metadata configuration?