OK i change the P9 to P5 and also Z2 to Z1 and now works
i run mesh and i got this

Number of probe points: 109

Probe area: 452.4 cm²

Maximum deviations: -0.633 / 0.027 mm

Mean error: -0.273 mm

RMS error: 0.161 mm

0_1523660226736_Capture.PNG

I m not sure if this is right