ORACLE APEX doesn´t pass ITEM to next page

Question

ORACLE APEX 20.2

I'm trying to pass the value of an Interactive grid column to a modal page. I created a page_item to receive the value and used a JavaScript action to load the column value via the selection change [interactive grid] event.

var i, selectedIds = "", model = this.data.model; 
for ( i = 0; i < this.data.selectedRecords.length; i++ ) 
  { apex.item("P8205_ID_MOD_SELECTED").setValue(model.getValue( this.data.selectedRecords[i], "ID")); } 

It works. The data is loaded into page_item P8205_ID_MOD_SELECTED.

But, when I load a modal page passing the value of this page_item, the value doesn´t loads on the page.

Any idea?