id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
4116	Start values of states are hardly changeable	Rüdiger Franke	Lennart Ochel	"The attribute `isValueChangeable` is true for state variables, even though Modelica insists in initial values, like in the following example:
{{{#!mo
model IsValueChangeable
  parameter Real x_start = 0;
  Real x(start = x_start, fixed = true);
  Real y;
  Real z;
initial equation
  y = 0;
equation
  der(x) = 1;
  der(y) = 1;
  der(z) = 1;
end IsValueChangeable;
}}}

Doesn't this mean that start values of state variables are hardly ever changeable?

See also the `level` states in `Modelica.Fluid.Examples.Tanks.ThreeTanks`."	defect	closed	high	1.11.0	Backend		fixed		Patrick Täuber