[pstricks] problem with pst-3dplot

[denis.verg è s]

I have some problems with pst3dplot.

I need graph of z = x^2y with -1 <= x <= 1 and -1 < = y < = 1

I have always the same message :

Runaway argument?
{normaleLongitude=45,
!Paragraph ended before \KV at setkeys was complete.

Thanks for jour help.

Denis