Force re-creation of a QML object

[sedi]

Hi,
is it possible to force the re-creation of a QML item (here: TableView)?

For a TableView (QuickControls 1.4), I use the resource property in the way shown below (shortened).

When I want to change the content of a header, this is not being updated/displayed. Of course, my model emits:

emit  this->headerDataChanged(Qt::Horizontal,0,999);

emit  this->headerDataChanged(Qt::Horizontal,0,999);

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I have tried binding in line 18 of the biggest code block :

"title": Qt.binding(function() { return tableModel.columnHeaderName(role) }),

"title": Qt.binding(function() { return tableModel.columnHeaderName(role) }),

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Unfortunately, "role" is always the highest number, not the respective appropriate one.

Calling update() does not help, toggling the visible property neither, even setting the model to undefined and back.
Can I trigger the creation process somehow? Or is there a different way to force it into diplaying a header change after creation?

Any help appreciated!
Cheers,
Sebastian

This is the (partial) code:

resources: {
    var roleList = tableModel ? tableModel.userRoleNames : 0
    var temp = []
    var columnComponent
 
    for(var i=0; i<roleList.length; i++) {
        var role = roleList[i]
                (!tableModel.isColumnHidden(role)) {
            if 
            var columnHeaderName = tableModel.columnHeaderName(role)
            if (tableModel.columnTypeName(role) === "QDate") {
                columnComponent = columnComponentDate;
            } 
            if (columnComponent) {
                temp.push(columnComponent.createObject(
                              dynamicTableViewBasis, {
                                  "role": role,
                                  "title": columnHeaderName,
                                  "width": tableModel.columnInitialWidth(role)
                              }))
            }
        }
    }
    return temp
}

resources: {
    var roleList = tableModel ? tableModel.userRoleNames : 0
    var temp = []
    var columnComponent

    for(var i=0; i<roleList.length; i++) {
        var role = roleList[i]
                (!tableModel.isColumnHidden(role)) {
            if 
            var columnHeaderName = tableModel.columnHeaderName(role)
            if (tableModel.columnTypeName(role) === "QDate") {
                columnComponent = columnComponentDate;
            } 
            if (columnComponent) {
                temp.push(columnComponent.createObject(
                              dynamicTableViewBasis, {
                                  "role": role,
                                  "title": columnHeaderName,
                                  "width": tableModel.columnInitialWidth(role)
                              }))
            }
        }
    }
    return temp
}

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As actual columns, I use components like this one:

Component {
            id: columnComponentDate
            QQC14.TableViewColumn {
                delegate: Text {
                    id: dateDelegate
                    property date dateVar: styleData.value ? styleData.value : ""
                    text: dateVar ? appController.dateStringShort(dateVar) : ""
                }
            }
        }

Component {
            id: columnComponentDate
            QQC14.TableViewColumn {
                delegate: Text {
                    id: dateDelegate
                    property date dateVar: styleData.value ? styleData.value : ""
                    text: dateVar ? appController.dateStringShort(dateVar) : ""
                }
            }
        }

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