Hello.

> then when I called it with
>
> FOR I=1 TO 24
> FOR J=1 TO 4
> READ EX(I,J)
> NEXT J
> NEXT I
>
> I got Syntax horror in the line READ EX(I,J). I do NOT have this

Maybe the error is in the DATA statement. In that case, the line
number reported is the one that contains the READ instruction.

If not, please post a short a program that shows the problem and the
version of Blassic you are using.

Regards.