CDS Annotation: Dynamically hide a line_item

[roman_schneider]

I have a simple CDS view with LINE_ITEM annotation. 

Dependent on a condition i want to hide the column via the hidden property. 

@ui.lineItem: [{ position: 1000, hidden: true }]  works fine. The column is not rendered. 

But none of the variants works all all:

@ui.lineItem: [{ position: 1000, hidden: #( 'X' )}]
@ui.lineItem: [{ position: 1000, hidden: #( true )}]

@ui.lineItem: [{ position: 1000, hidden: #( abap_true )}]

@ui.lineItem: [{ position: 1000, hidden: #( '1' )}]

Intention was to use something like:
@ui.lineItem: [{ position: 1000, hidden: #( case when MyTableField = '' then abap_true else abap_false end )}]

The question is, was is the correponding expression to "hidden: true"

[PawanAkella]

Even I tried the same thing for one of my poc. It didn't worked for me. I think EDM are static and cannot be made dynamically.

I achieved the functionality through frontend creating the columns dynamically in onInit() function.