Disabling custom action button on grid is not working

Hello!

Mi instance is 22R2 and until now, conditionally enabling/disabling custom actions had been pretty easy.

Usually I just use the SetEnable Method in a RowSelected event… Like this one here that I’m trying to use for a custom action in the SOInvoice screen:

 protected void _(Events.RowSelected<SOInvoice> e)
        {
            SOInvoice row = e.Row;
            if (row == null) return;
            itemSearch.SetEnabled(Base.Document.Current.CustomerID == null ? false : true);

        }

The problem that I’m facing right now is that visually, the button remains “Enabled” at all times, while logically the button is disable until the user enters the customer:

When the user clicks on the button without entering a Custmer. The condition works and the system display the alert: 

But the button remains visually enabled and my eye is twitching becouse of this!

In the aspx I placed the button inside the actionbar like I have done with many other customizations:

<ActionBar>
              <CustomItems>
                <px:PXToolBarButton Text="Search Items">
                  <AutoCallBack Target="ds" Command="ItemSearch">
                    <Behavior CommitChanges="True" PostData="Page" /></AutoCallBack></px:PXToolBarButton>
                <px:PXToolBarButton Text="Add Order" Key="cmdShipmentList">
                  <AutoCallBack Command="SelectShipment" Target="ds">
                    <Behavior PostData="Page" CommitChanges="True" ></Behavior>
                  </AutoCallBack>
                </px:PXToolBarButton>

I hope somebody could give light on this little frustrating issue.

Thanks!