reinit() is not accepted

[kajny]

Reinit statements gives execution failed.

Testmodel:

block FilterBlock1

parameter Real T = 1 "Time constant";
parameter Real k = 1 "Gain";
input Real u = 1;
output Real y;

protected

Real x;

equation

der(x) = (u - x)/T;
y = k*x;

algorithm

when initial() then

reinit(x, u); if x is u since der(x) = (u - x)/T

end when;

end FilterBlock1;

[Lennart Ochel]

I guess, that is no valid Modelica code.