change currency $ to Rp(indonesian)

Hello..

my name sherly and i work in surabaya-indonesia

i wanto to use myob essensials on my office, i still trial on myob essensials.

now, i want to buy online accounting myob essensials for a year, but i have a problem when to change curenncy $ to Rp(Indonesian)

when i buy that for a year, can i change the Currency

(Sorry... i can write in english very well)