Calculate no of months in Ax 2012

static void Nar_calNoofmnt(Args _args)
{
    TransDate       fromdate;
    TransDate       todate;
    int             noofmnt;
    fromdate = 01\04\2017;
    todate   = 09\10\2018;
    if(fromdate<todate)
    {
        do
        {
            noofmnt =mthOfYr(fromdate);
            info(strFmt("%1-%2--%3",mthName(noofmnt),fromdate,endmth(fromdate)));
            fromdate = nextMth(fromdate);
        }
        while(fromdate<=todate);
    }
}