How do I update a custom field in a different DAC to the one specified in FieldUpdated event?

Hi,

In the Projects screen, a client is wanting to have the description field from the Tasks tab to be copied across to the ‘Task Description’ custom field in the Revenue and Cost Budget tabs.

I have code set up from a previous request that copied over the Task ID column to these tabs, so I am just needing to add some additional logic to this code, but I am not sure how to achieve this.

The comments in the code starting with ‘ATTEMPT:’ show where I was adding in the logic to try and achieve this.

It publishes without any issues, but then when I try it out in the Projects screen, I get the error shown in the image below about an incorrect extension being requested.

What would you recommend for my next attempt?

Kind regards,

Andrew

protected void PMTask_UsrLineCtr_FieldUpdated(PXCache cache, PXFieldUpdatedEventArgs e)
    {

      var row = (PMTask)e.Row;

      PMTaskExt rowExt = row.GetExtension<PMTaskExt>();

      // ATTEMPT: Grabbing the DAC extension for the PMRevenueBudget and PMCostBudget DACs
      PMBudgetExt budgetExt = cache.GetExtension<PMBudgetExt>(row);

      PMTask task = new PMTask();
      task.ProjectID = row.ProjectID;
      task.TaskID = row.TaskID;
      task.Description = row.Description;

      var selectCostBudget = new PXSelect<PMCostBudget,
        Where<PMCostBudget.projectID, Equal<Required<PMCostBudget.projectID>>,
        And<PMCostBudget.projectTaskID, Equal<Required<PMCostBudget.projectTaskID>>,
        And<PMCostBudget.type, Equal<GL.AccountType.expense>>>>>(this.Base);

      var selectRevenueBudget = new PXSelect<PMRevenueBudget,
        Where<PMRevenueBudget.projectID, Equal<Required<PMRevenueBudget.projectID>>,
        And<PMRevenueBudget.projectTaskID, Equal<Required<PMRevenueBudget.projectTaskID>>,
        And<PMRevenueBudget.type, Equal<GL.AccountType.income>>>>>(this.Base);

      bool costBudgetExists = false;
      // If task already exists in the Cost Budget column, just update the LineCntr column
      foreach (PMCostBudget budget in selectCostBudget.Select(task.ProjectID, task.TaskID))
      {      
          budget.LineCntr = rowExt.UsrLineCtr;
          costBudgetExists = true;
          selectCostBudget.Update(budget);
      }

      bool revBudgetExists = false;
      // If task already exists in the Cost Budget column, just update the LineCntr column
      foreach (PMRevenueBudget budget in selectRevenueBudget.Select(task.ProjectID, task.TaskID))
      {      
          budget.LineCntr = rowExt.UsrLineCtr;
          revBudgetExists = true;
          selectRevenueBudget.Update(budget);
      }


      if (!costBudgetExists) {
        // Add task to Cost Budget Tab if it doesn't exist
        PMCostBudget costBudget = new PMCostBudget();
        costBudget.LineCntr = rowExt.UsrLineCtr;
        costBudget.ProjectTaskID = task.TaskID;
        selectCostBudget.Insert(costBudget);
      }

      if (!revBudgetExists) {
        // Add task to Revenue Budget Tab if it doesn't exist
        PMRevenueBudget revBudget = new PMRevenueBudget();
        revBudget.LineCntr = rowExt.UsrLineCtr;
        revBudget.ProjectTaskID = task.TaskID;

        // ATTEMPT: This is how I was aiming to update the custom field with the Task description
        budgetExt.UsrDescriptionExt = task.Description;

        selectRevenueBudget.Insert(revBudget);
      }
    }

    #endregion
  }
}