Charles,
Thanks you for your kind assistance.
In the end I used
Code:
{QUOTE{=MOD({DATE \@ M}+10,12)+1}/0 \@ MMMM}
to fullfill my requirement.
For anyone else who may be interested
Code:
For this month: {DATE \@ MMMM}
For next month: {QUOTE{=MOD({DATE \@ M}+12,12)+1}/0 \@ MMMM}
For last month: {QUOTE{=MOD({DATE \@ M}+10,12)+1}/0 \@ MMMM}
To get just the 3 letter code for the month, replay MMMM with MMM