conjugate issue

[ji3m]

In my program i build a string like

s := "conj (2+3*i)" and then do

r := CAS (s);

the returned r is 2-3*i with a funny looking minus sign.

But then

t := "conj (" + r + ")" gives t := "conj (2-3*i)"

But the CAS (t) fails with a major error.

At the cas window , when rentering the item with the odd minus
sign it is converted by the parser to a normal minus sign so it works.

This program shows my problem better.

Enter bbb (2+3*i) or even bbb ("2+3*i") .
It fails when trying to use return result Q (whick has funky minus sign)

EXPORT bbb(S)
BEGIN
LOCAL P,Q,R,T;
DEBUG;
P := "conj(" + S + ")";
Q := CAS(P);
R := "conj(" + Q + ")"; // using STRING (Q) doesnt help
T := CAS(R); // fails here
END;