don't know if this helps:
Disabling standard mode and enabling Legacy mode is not recommended by Qlik. It can create a security risk by exposing the file system.
Please use Standard mode and edit Data Connection.
Disabling standard mode
Qlik Sense Legacy modeHope this helps,Best regardsAndy
In the what's new in Qlik Sense February 2018; we're tlaking about dynamic URL for web connectors:
Maybe it's something like the REST Connector dynamic URL; I mean we can change the url DYNAMICALLY by putting it in a variable and using the
WITH CONNECTION (
sthing like this (I call the Web Service each time with a new Date simply by dynamicaly changing the URL of the lib connection without changing the legacy mode...)
Hope this helps