I found out that:
I have 3 setting for the filament , Build (35), support (35) AND default (50).
So it picked the default value. I change the setting for the default value to 35 and then it worked.I also tried to delete the default , but it comes back!
I have seen some other strange things with the slicer but I cannot recall them right now.I have a dual extruder.
BR