dynamic coding of base url of odata service

Hello,

i wondering how to set dynamicly in ui5 app controller the base service url.

In TST QAL PRD systems this base url are different so during transports static coding of this base url service makes trouble.

For example

TST : http://s-zz.at:8000

QAL: http://s-cc.at:8002

How to resolve such case ?

Any dynamic variable could be used ?

Lucas