How to: Disable or Enable an Action Pane Button in D365 - AX7 - Dynamics 365 operations

The below example is for using Event handlers - salesTableInteration is the base class.
class TESTSalesTableInteraction
{
[PostHandlerFor(classStr(SalesTableInteraction), methodStr(SalesTableInteraction, enableHeaderUpdateJournalActions))]
public static void SalesTableInteraction_Post_enableHeaderUpdateJournalActions(XppPrePostArgs args)
{
Page page;
SalesTableInteraction salesTableIntraction = args.getThis() as SalesTableInteraction;
page = salesTableIntraction.page();
page.actionPaneControlEnabled(formControlStr(SalesTable, buttonCreatePurchOrder), true);
}

}