Records are not showing using Kotlin

[alcarazolabs]

Hi I implement this library using kotlin however the records are not showing only the headers.

 implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
    implementation 'com.github.ISchwarz23:SortableTableView:2.8.1'

layout.xml

  <de.codecrafters.tableview.SortableTableView
                        android:layout_marginTop="5dp"
                        xmlns:table="http://schemas.android.com/apk/res-auto"
                        android:id="@+id/tableView"
                        table:tableView_columnCount="2"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        />

Fragment.kt

 private lateinit var tableViewSalesPerMonth: SortableTableView<Array<String>>
onViewCreated(...){
  tableViewSalesPerMonth = binding.tableView as SortableTableView<Array<String>>
        tableViewSalesPerMonth.headerAdapter = SimpleTableHeaderAdapter(requireContext(),"Mes","Cantidad Ventas")

        var data = arrayOf(arrayOf("may", "33"), arrayOf("jun","32"))
        tableViewSalesPerMonth.dataAdapter = SimpleTableDataAdapter(requireContext(), data)

}

I will appreciate any idea to fix this problem. Thanks so much.