tow conditions

[SaraAbdulah]

i need to calculate how many letters are not read more than five days with tow conditions:

status field (ISREAD= 0)

and the difference between received day and system date in days is more than 5 ([D_DIFF])> 5)

i tried this expression but i need some help to correct it

if((ISREAD= 0) and ([D_DIFF])> 5,count(DISPLAYNUMBER))

[Chanty4u · Accepted solution]

Try this 

COUNT({<ISREAD={0}, [D_DIFF]={'>5'}>} DISPLAYNUMBER)