thanks Naomi. I was hoping that there was a built in FP one, ended up doing this

CTOD("01/" + IIF((MONTH(mx) + 1)>12,'01',ALLTRIM(STR((MONTH(mx) + 1)))) + "/" + ALLTRIM(STR(YEAR(mx)))) - 1

but some of the functions in the FAQ look neater :)
~M
>>hi,
>>is there a routine that returns the last day of the month? something like lastdayofmonth(date()) giving me 31 for the month of august etc. I could write a routine but thought i saw one before but cannot find it.
>>~M
>

>GoMonth(date(MyYear, MyMonth,1),1) -1

>
>See also Some useful date functions FAQ #7661