Dynamically switching connect in Modelica

Question

Assume I have a large connector involving all kinds of base types (Real, Integer, String, Boolean). How can I switch connections based on state events? I would like to do something like this:

model switch
 input ComplicatedConnector icon[2];
 output ComplicatedConnector ocon;
 input Real x;
 equation
   if x >= 0 then
     connect(ocon, icon[1]);
   else
     connect(ocon, icon[2]);
   end if;
end switch;

This does not work. How can it be properly expressed in Modelica?

Answer based on comment by Adrian Pop.

model switch
 input ComplicatedConnector icon[2];
 output ComplicatedConnector ocon;
 input Real x;
 ComplicatedConnector con;
 initial equation
   con = icon[1];
 equation
   connect(ocon, con);
   when x >= 0 then
     con := icon[1];
   end when;
   when x < 0 then
     con := icon[2];
   end when;
end switch;

Update: The model above is wrong because ocon outputs the initial value of icon[1] forever if no event occurs which is not what you would expect from a switch. Note that this is not due to a wrong answer but due to my false interpretation of the answer. The following model is based on the answer by Michael Tiller.

model switch
 input ComplicatedConnector icon[2];
 output ComplicatedConnector ocon;
 input Real x;
 Integer k;
 initial equation
   k = 1;
 equation
   ocon = icon[k];
   when x >= 0 then
     k := 1;
   elsewhen x < 0 then
     k := 2;
   end when;
end switch;

Answer 1

Is not possible. You can only switch them based on a parameter known at compile time (also known as structural parameter). The condition in the if equation containing connects needs to be a parameter expression.

Answer 2

Note that connect statements are equations. You can expand them out yourself. They exist mainly to avoid "bookkeeping" errors for generating boilerplate equations. So what I suggest you do is simply take your switch model and expand each connect into equations. The it should work.