Conversion to MTD

[#1]

How to convert the below expression to MTD

Count(if(not IsNull(ONBL) and Len(Trim(OFBL)) <=0 ,FLNO))

[ashfaq_haseeb]

Hi

go through the below post.

http://community.qlik.com/docs/DOC-6163

Regards

ASHFAQ

[its_anandrjs]

Please elaborate more

Or you can use a expression like

Count( {<Datefield = {'>= $( =Monthstart(Datefield)  )  <= $( =Today(DateField) ) '}>} FLNO)

What is the use of not IsNull(ONBL) and Len(Trim(OFBL)) fields

[#4]

this is the calculation condition for counting the Flight no.,now the user want to see this value on month on month  basis