If statement should continue for some values even if "else" is true

I'm working with a Simulink model for a series hybrid vehicle. The statement I want to make is "if the battery percentage (SoC) drops below 35%, then turn on the engine and run it until it reaches 50%. But I don't know the way to make it continue to 50% because it's making the "else" statement true.

This is what I came up with so far, but this is of course not enough, should I implenent something like a "continue" statement?

function [w,T]  = EnginePower(B_SoC)
if B_SoC < 0.4
    T=12;
    w=2500;
   
else
    T=0;
    w=0;
end

Answer 1

[Torsten]

You must have a flag which indicates whether the engine is on or off.

function [w,T]  = EnginePower(B_SoC)

  persistent on
  if isempty(on)
    on = 0;
  end
  T = 0;
  w = 0;
  if on == 0
    if B_SoC < 0.35 
        T = 12;
        w = 2500;
        on = 1;
    end
  end
  if on == 1
    if B_SoC <= 0.5
        T = 12;
        w = 2500;
    else
        on = 0
    end
  end
  
end