Script Bash Solaris SS7 Query signaling point

Question

I'm trying to do a script to display some configuration from the MML console (Man-Machine Language Interface) for SS7 using the file option:

cat /tmp/queryss7.txt 

display-sp:;
exit:;

mml -f /tmp/queryss7.txt 0

< ERROR >:: Input source ambiguous

But this error only shows up if I use the crontab to start the script. If I start manually the script works fine...

Thx