Dear BUGS, I posted my messages twice but I think you did receive it so I posted it again. Hope you can help me to deal with my problem. Thank you so much!! I am working with spatio-temperal model and I got an error message such that "variable x1 is not defined". "x1" is one covariate in my logit model and I have x1, x2, ... , x11 as my covariates. I cannot compile my data when I have x1 but it worked well after I remove x1. I don't know why this happened. Could you help me to figure it out? Thank you so much. Yung-wei ------------------------------------------------------------------- This list is for discussion of modelling issues and the BUGS software. For help with crashes and error messages, first mail [log in to unmask] To mail the BUGS list, mail to [log in to unmask] Before mailing, please check the archive at www.jiscmail.ac.uk/lists/bugs.html Please do not mail attachments to the list. To leave the BUGS list, send LEAVE BUGS to [log in to unmask] If this fails, mail [log in to unmask], NOT the whole list