How to bind to tab title in modern toolkit?

[doragon_neo]

Hi,

I tried to bint to tab title.
In classic toolkit, it works this:

        {
            bind: {
                title: '{mainTabTitle}'
            },
            iconCls: 'fa-home',
            items: [{
                xtype: 'mainlist'
            }]
        }

But, not works in modern:

        {
            bind: {
                title: '{mainTabTitle}'
            },
            iconCls: 'x-fa fa-home',
            layout: 'fit',
            items: [{
                xtype: 'mainlist'
            }]
        }

Uncaught Error: Cannot bind title on Ext.Container - missing a setTitle method.

I tried these:

            bind: {
                tab: {
                    title: '{mainTabTitle}'
                }
            },

            bind: {
                tab: {
                    title: '{mainTabTitle}'
                },
                deep: true
            },

            tab: {
                bind: {
                    title: '{mainTabTitle}'
                }
            },

But not works.

Can I bind to tab title?

[doragon_neo]

I could have resolved it myself!

        {
            tab: {
                viewModel: 'main',
                bind: {
                    title: '{mainTabTitle}'
                }
            },
            iconCls: 'fa-home',
            items: [{
                xtype: 'mainlist'
            }]
        }

Is this the right way?