Magic error with OWP MI17

[pogingwapo 0]

I added this line in ECP config and I got Magic error ingame:

model="\OWP_Mi8\OWP_Mi17bis";

sample: class Mi17: Helicopter {};

{

side=TEast;

crew="SoldierEPilot";

displayName="Mi-17";

model="\OWP_Mi8\OWP_Mi17bis";