Variable depended plane relation problem

Hi,

I'm having a problem with defining planes one depned on enother using variable to define angle between them.

I want to build set of planes on axis same angle between each to another. All of them defined by variable Angle in equasion manager.

I want to change variable value and let planes update by this change.

After i'm getting over 180 deg, solidworks start new angle from 0 and not from 180deg

How can i define this to let it work right?

I'm uploading example.

Please advice.

Thanks a lot

SolidworksParts And Features