how to use level set with carreau model?

Hi all,
I would like to use level set to research a non-newtonian problem. So I try it in the rising bubble case and I just change the setting in Component 1 (comp1)>Multiphysics>Two-Phase
Flow, Level Set 1 (tpf1) Fluid 2 Properties, to make water a carreau fluid.
However,it shows errors.
Undefined variable.
- Variable: comp1.tpf1.n_car2
- Geometry: geom1
- Boundaries: 1
Failed to evaluate operator Jacobian.
- dvol*((pi*((-(comp1.spf.res_u*(nojac(comp1.w*comp1.spf.rho)*comp1.spf.tau_m)))*2))*r) - Geometry: geom1
- Failed to evaluate operator Jacobian.
- (2*comp1.spf.streamlinens*pi*r)*(dvol)
The model is attached.
Any help at all is much appreciated, thank you.
——Sandy Wang