how simply my script

[SCM]

1st function  (find the last date for last month)

date((date(date(floor(monthend(addmonths(Today(),-1))),

2nd function ( to calculate diff between month of previous month and booking date for calculate the Aging)

date((date(date(floor(monthend(addmonths(Today(),-1))),
'DD/MM/YYYY'),'DD/MM/YYY')-date("Pstng Date",'DD/MM/YYYY')),'M') as 'AGING',

my question is there anyway to simplify my 2nd  function, can i do it without copy paste whole 1st function 

[Vegar · Accepted solution]

Function 1 simplified:
Dayname(monthend(Today(),-1))

You can not reuse the output of a field inside the same LOAD, you will need to re-write the expressing. You can however use presiding load.
LOAD
*,
monthenddate - DateField
;
Load
DateField,
Dayname(monthend(Today(),-1)) as monthenddate
FROM ...
;