Its working now: this is what I did:

CNMI=00001
CNMS=me, me, mt ' stores and reads from TA memory & NOT sim

What I would like to do is change it to store, read, delete from sim only. I know I have to change CNMS=SM, SM, SM but for this to take effect I need help in changing value of CNMI (Which I am unable to figure out)
Any advise on CNMI values?

Thanks