Array index in server connect expressions

Wappler Version : 2.5.7
Operating System : 10.15 mac

Expected behavior

A valid expression with an array index should be supported in the expression builder

Actual behavior

The expression is modified to an invalid state

How to reproduce

Create this expression manually, then enter expression builder and save.

The following is valid and works:

Screen Shot 2020-02-21 at 10.56.57 AM890×302 10.6 KB

But the builder turns it into this:

Screen Shot 2020-02-21 at 10.57.09 AM942×186 6.78 KB