# Write the condition

The month of the year will determine what operation should be done to get the disaggregated value of the series, so we want the condition to be true if the month is between March and December. The shortest way to write this in Macrobond is as follows:

month()>2

This statement checks if the month’s value is greater than 2, meaning that it’s after February.

So far, our formula looks like this:

if(month()>2, value 1, value2)