I've got a pretty simple unigrid setup and all the components are working as expected. I've now got a requirement to hide the "delete" image button and replace it with text. I'm able to hide the button, but not sure how I can return that button instance AND additional text. Do I need to add another action button? If so, how do I make it so its not a ImageButton?

<cms:UniGrid ID="gridBankAccounts" runat="server" ShowActionsMenu="true" RememberDefaultState="true" ShowActionsLabel="false" DisplayMode="Default" OnOnAction="gridBankAccounts_OnAction" OnOnExternalDataBound="gridBankAccounts_OnExternalDataBound">
    <GridActions>
        <ug:Action Name="deleteaction" Caption="Delete account" Icon="delete.png" ExternalSourceName="checkVisibility" CommandArgument="RS_ACCTCODE"  Confirmation="$kt.confirmdelete.bankacct$" />
    </GridActions>
    <GridColumns>
        <ug:Column Source="RS_ACCTDESC" Caption="Nickname" Wrap="false" AllowSorting="true" />
        <ug:Column Source="RS_BANKNAME" Caption="Bank Name" Wrap="false" AllowSorting="true" />
        <ug:Column Source="DisplayAccountType" Caption="Account Type" Wrap="false" AllowSorting="true" />
        <ug:Column Source="RS_BANKACCT" Caption="Account Number" Wrap="false" AllowSorting="true" />
    </GridColumns>
    <GridOptions ShowSortDirection="true" DisplayPageSizeDropdown="false" />
</cms:UniGrid>

protected object gridBankAccounts_OnExternalDataBound(object sender, string sourceName, object parameter)
{
    object param = null;
    bool isDelete = false;

    if (parameter is System.Web.UI.WebControls.GridViewRow)
    {
        param = ((System.Web.UI.WebControls.GridViewRow)parameter).DataItem;
    }

    isDelete = ValidationHelper.GetBoolean(GlobalHelper.IsYes(ValidationHelper.GetString(((System.Data.DataRowView)(param)).Row["RS_DELETE"], "Y")), true);

    switch (sourceName)
    {
        case "checkVisibility": // setting button visibility based on if payments are pending against this account or not
            ImageButton btn = (ImageButton)sender;
            btn.Visible = isDelete;
            // if isDelete, need to hide button and display label or text
            return btn;
    }
    return parameter;
}