cannot add PATH to user crontab file

hi All, here is the problem: I'm not able to specify a PATH inside the user crontab file (/var/spool/cron/crontabs). The only syntax it accepts is the usual "* * * * * file" I'm not able to add PATH, or HOME, or MAILTO, or anything else. when I try to save the crontab, I have the error:

"PATH=/sbin:/bin:/usr/sbin:/usr/bin:/orabin/appbin/DEV50/apps/tech_st/10.1.2 crontab: error on previous line; unexpected character found in line. crontab: errors detected in input, no crontab file generated." 

Need help from the experts. (I am using SunOS / Solaris 5.10 - Bourne shell) Thanks.

Solaris' cron does not support setting shell variables in the crontab. But you can define a PATH in /etc/default/cron. From the man-page:

     You can specify the PATH for user cron jobs by  using  PATH=
     in  /etc/default/cron.  You  can  set the PATH for root cron
     jobs using SUPATH= in /etc/default/cron. Carefully  consider
     the security implications of setting PATH and SUPATH.

     Example /etc/default/cron file:

     CRONLOG=YES
     PATH=/usr/bin:/usr/ucb: