Will it work

Hi ,

Our Client system is upgraded to UI5 Version 1.20

But if I want to use some of the functionalities like MessageBox which are available from 1.21.2. Can we use that?

In Index.html File --> I am mentioning like below to get the updated libraries

src="https://openui5.hana.ondemand.com/resources/sap-ui-core.js"

but i am not able to Use MessageBox functionalities and getting MessageBox.error() is not a function etc etc

will it really work ? will it really include latest libraries if i use src as below .

src="https://openui5.hana.ondemand.com/resources/sap-ui-core.js"