which type is the value returned by iVolume?

[Reza nasimi]

Hi 
i wrote this:

double This_Vol=iVolume(NULL,PERIOD_M1,0);

and i faced this warning: 

"possible loss of data due to type conversion."

when I checked the returned value in Comment() I find out it is integer . so why I have this  warning?
also I tried whit this :

int This_Vol=iVolume(NULL,PERIOD_M1,0);

and I have same warning .
any help please ?

[JC]

Reza nasimi:

any help please ?

iVolume() returns long, not int: https://docs.mql4.com/series/ivolume

[Reza nasimi]

JC:

iVolume() returns long, not int: https://docs.mql4.com/series/ivolume

thank you,
I changed it to long and problem solved.