Painting flow maps doesn't work with material

Hello I created a material with substance designer that uses flow maps to rotate the instance tiles. In theory it works, I tested it with downloaded flow maps like this 

And the tiles turn as expected but as soon as I try to paint the flow map in SP it doesn’t work.
My setup is to have the material on top with the anchor to a paint layer below where I use the green normal brush to paint the flow map. 

As described here https://helpx.adobe.com/substance-3d-painter/painting/advanced-channel-painting/flow-map-painting.html .
 

Even though I am following the tutorial to the letter the material doesn’t react as expected and that I think is because the resulting flow map reads more like this 

Where the color ranges don’t match the flow map values.
Why is that? What I am doing wrong? Could it be my material set up incorrectly?