edit text subtract help

[VC_GiangHo]

i guess last time i asked this question i didn't explain it to well, i need help getting win text from two different static texts on a dialog and subtracting one of those text from the other text,

Code:

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str a.getwintext(id(3 "Dialog"))
str b.getwintext(id(4 "Dialog"))
;;then subtract id(4 "Dialog"))
;;from id(3 "Dialog"))
;; say id(3 "Dialog")) has an amount of 1000
;; and id(4 "Dialog")) has an amount of 250
;; subtract 250 from 1000 would = 750 so that would break
;; if id(4 "dialog")) has an amount of 500 subtract that from id(3 "Dialog")) that would = 500 then out ret
;;if = 500 out
                ret
    else, break

Thanks For Any Help Added

[Gintaras]

For arithmetic operations use numeric variables, for example int or double. Use function val to convert string to number.

double aN=val(a 2)
double bN=val(b 2)
double result=aN-bN
if result=500
,out result
,ret
else break

[VC_GiangHo]

haha thanks i figured i would have to transfer it to alphabetical letters thats were i was having trouble at because you cant use the same var twice unless you use it in a different function or using variant i think , i have to read qm help again to refresh some data lol ,
but yea it worked in a test if any further ;errors i will let you know
Thanks for the help...