load-sensitive system in simscape

I am building a model of a load-sensitive system in simscape. I used a pressure compensator to control the pressure drop before and after the valve, but this compensator does not seem to be able to adjust the opening area based on the feedback. The area can only be calculated based on the pressure drop. Refer to Figure 1. This problem bothers me.

Figure 1

[Yifeng Tang]

From the picture, I don't see any obvious reason why it doesn't behave the way you intended. I suspect it's a parametrization issue. Attaching the model and describing the expected behavior of the system will help the community diagnose your problem.