Date:         Mon, 6 Jun 2005 13:19:30 -0400
Reply-To:     Chang Chung <chang_y_chung@HOTMAIL.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Chang Chung <chang_y_chung@HOTMAIL.COM>
Subject:      Re: A simple question and error for using MACRO variable
Comments: To: Fred Zhang <ieaggie2002@GMAIL.COM>

On Mon, 6 Jun 2005 12:39:02 -0400, Fred <ieaggie2002@GMAIL.COM> wrote:

>Hi, I have the following code and always got an error:
>
>               %let prediction_interval = 6;
>               %let i = 6;
>        PROC STATESPACE DATA=Demand
>                OUT=F4(RENAME=(FOR1=FCST_STATE))
>                                LEAD=&prediction_interval + &i;
>                VAR Demand PCA1 PCA4;
>        ID t;
>        RUN;
>
>The error message is:
>1893      PROC STATESPACE DATA=Demand
>1894          OUT=F4(RENAME=(FOR1=FCST_STATE))
>1894! LEAD=&prediction_inteval + &i;
>           -
>           22
>WARNING: Apparent symbolic reference PREDICTION_INTEVAL not resolved.
>1894                                                &prediction_inteval + &i;
>                                                     ------------------     -
>                                                     202                    22
>ERROR: Invalid number conversion on ;.
>ERROR: Invalid number conversion on ;.
>ERROR 22-322: Expecting an integer constant.
>ERROR 202-322: The option or parameter is not recognized and will be ignored.
>
>
>Can anybody give me some advice how to correct this error?

Hi, Fred,

I wonder if the following would solve your problem.

Cheers,
Chang

OLD>  LEAD=&prediction_interval + &i;
NEW>  LEAD=%eval(&prediction_interval + &i);