PRVMn retrieves a value for the same day of the month, n months ago, from a specified variable.

SYNTAX:

FUNCTION(Cx)
where :
Cx is a conditional variable x
n specifies how many months to look backward.

NOTES:

n must be less than 100.

If you just need the monthly values of a variable, see PRVEOMn.

EXAMPLES:

V357 = PRVM6(C71)

In this example, variable 357 will contain the values of variable 71 from six months earlier.