SASVA -Text box - how to replace (missing) with 0

[RahulG]

I am using Text box for numeric value with advance filter. If condition is true then numeric value is printed. 

But when there is no rows with that condition then it is showing (missing).

I tried to use new calculated item where I used condition if  Val missing then 0 Else Val

It is helping to get rid of (missing)

[VDD]

options missing = 0;

[RahulG]

Where should I write this statement in SASVA reports