I can not download attachments in Fiori Client ??

Hi,

I download files from browser with te follow code javascript:

var urlProvidingFile = "/sap/opu/odata/sap/ZPMGW_ORDERNPM_SRV/collection(Orden='123')$value"; 
parent.window.open(urlProvidingFile, 'blank');

But this code not fuction in Fiori Client, I tested in two tablet SAMSUNG.

How I can download files in fiori client ??