ios - Cancel content editing input request -

in app when download contenteditinginput, user can selected new asset, i've tried kill previous request before starting new one. unfortunately cancelcontenteditinginputrequest: doesn't work , still progress , completion block fired when downloading done. self.asset , self.requestid have expected values. problem present when downloading asset icloud. did use api wrong way?

if(self.requestid) {     [self.asset cancelcontenteditinginputrequest:self.requestid]; }  phcontenteditinginputrequestoptions *options = [phcontenteditinginputrequestoptions new]; options.networkaccessallowed = yes; options.progresshandler = ^(double progress, bool *stop) {     // update ui };  self.asset = newasset; self.requestid = [self.asset requestcontenteditinginputwithoptions:options completionhandler:^(phcontenteditinginput *contenteditinginput, nsdictionary *info) {     self.requestid = 0;      // handle content editing input }]; 

i right me being wrong. have used api wrong way. cancelcontenteditinginputrequest: used cancel preparing contenteditinginput asset on device. cancel download icloud 1 should use:

options.progresshandler = ^(double progress, bool *stop) {    *stop = yes; }; 

it different topic, if api logical...