In tradition apps, the title of a screen can be dependent on an expressions giving you the ability to add valuable information to the title.

In reactive applications the tool-tip over the title of a screen still mentions it can be based on an expression, but you cannot open the expression editor or even type one in.

Any workaround this, so that I do not need to specify the title at development but at runtime?

Kind regards,


Hi Dieter,

OutSystems is already working on this. In the meantime check out the proposed workaround in the post from Vitor Teixeira.

Hope this helps!