Hi There,
I do assign boolean  value to variable with when command.
such as below sample.

  when condition1  then

    x = true;

  end when;

and then i want to re-assign new value with new condition.

  when condition2  then

    x = false;

  end when;

But OM give me this error.  " Error: Model is structurally singular, error found sorting equations "

How can re-assign  x  value after when condition.

Thanks

Oki