Is there a way to use variables in a substring?

I am writing a stored proceedure that will need to check each character in a string. Here is a snippit of code: . . . DEFINE myChar CHAR(1); DEFINE i INTEGER; FOR i IN (1 TO myStringLen) LET myChar = myString[i,i]; IF myChar = "A" THEN myString[i,i] = "a"; END IF END FOR; . . . I get a syntax error on [i,i]. If I replace the [i,i] with [1,1] it passes the syntax check. Is there another way to do this? I am running on Informix 7.3. -----------== Posted via Deja News, The Discussion Network ==---------- http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own