Two-way binding does not work for header fields

Question

I am using OData V2 Model and I have set default binding Mode to TwoWay, but fields on header level do not get changed in the model, and when I try to submit, model has no changes and do not submit. But if I change some field in a table (aggregation), model get changes and submit works.

Any idea why TwoWay binding mode works in only aggregations?

Any help is welcome.

Answer 1

Two way will work if we set the binding syntas as complex in the bootstrap script tag in index.html file as mentioned below:

<script id="sap-ui-bootstrap"
src="resources/sap-ui-core.js"
.
.
data-sap-ui-xx-bindingSyntax="complex"
.
.
></script>