extension expression need $ sign in front of value

[everest226]

Sum({< Isno={'N'}, [ Name] = {'USA'}  >} [ Cost] )

Outcome 

$456

[dplr-rn]

you give that in the number format rather than on the expression.
give number formatting as Money in qlik sense

[dplr-rn]

alternatively add this to your expression start
'$'&

[everest226]

Thanks for reply  i have use auto format because i want outcome as    $61.81M.

if i use money it will be $613654654 something for example , just want to be  above format 

[dplr-rn]

you can still format that again
divide your expression by a million and change the format to $#,##0.00 M

[everest226 · Accepted solution]

here what i did 

Sum({< Isno={'N'}, [ Name] = {'USA'}  >} [ Cost] ) /1000000

and Number formatting  to Money

and Format pattern to  $#,##0 M;-$#,##0 M

works perfectly