NSArray error: "!Expression is not assignable"
I have created an NSArray which I have initialized to contain the attributes of a core data entity. When I later try to set these attributes through the Array I get the error  "!Expression is not assignable". How do I set the values of the attributes by referencing them through the NSArray? Here are the relevant portions of my code:

        headingArray = [[NSArray alloc] initWithObjects:
                    heading1,
                    heading2,
                    heading3, ...

heading1, heading2, ... are attributes of the core data entity

        for (int i=1; [note.headingCount intValue]-1; i++) {
        [note.headingArray objectAtIndex:i] = selectedTemplateForNote.heading1;
      }

the [note.headingArray objectAtIndex:i] is the code that is flagged with the error "!Expression is not assignable".

NSArray error: "!Expression is not assignable"
===

I have created an NSArray which I have initialized to contain the attributes of a core data entity. When I later try to set these attributes through the Array I get the error  "!Expression is not assignable". How do I set the values of the attributes by referencing them through the NSArray? Here are the relevant portions of my code:

        headingArray = [[NSArray alloc] initWithObjects:
                    heading1,
                    heading2,
                    heading3, ...

heading1, heading2, ... are attributes of the core data entity

        for (int i=1; [note.headingCount intValue]-1; i++) {
        [note.headingArray objectAtIndex:i] = selectedTemplateForNote.heading1;
      }

the [note.headingArray objectAtIndex:i] is the code that is flagged with the error "!Expression is not assignable".
