Linearize error simulink model in Matlab function (cannot linearize abs())

I want to linearize a simulink model that use a MATLAB Function.

Inside the MATLAB function I apply abs(x) and this create a fault of the linearization of the model and for this reason this custom block is not considered during the linearization.

How can I overcome this problem including my matlab function with abs(x)?

I also tried to compute ((x)^2)^0.5 but I continue to get the same linearization error.