Hi Kaniz,

Thank you for replying back to my request. Yes I am consolidating all table record counts using notebook task (Task A) and passing 'Total_rec_counts' to condition_task (Task B) . It validate the 'Total_rec_counts' and decide to run DLT pipeline. 

code 

dynamic "task" {
  for_each = var.map_of_tables
  content {
    task_key = "${var.env}_validate_total_rec_count_${lower(task.key)}"
    run_if = "ALL_SUCCESS"
    depends_on{
      Task_keY="${var.env}_get_total_rec_count_${lower(task.key)}" # Task to get the record counts
    }

    condition_task {
      left = "{{tasks.${var.env}_get_total_rec_count_${lower(task.key)}.values.total_rec_count}}"
      op = "GREATER_THAN"
      right = 0
    }
  }
}

Error :-  it is not able to identify left operand

Error: cannot update job: The "left" operand of the if/else condition alid reference. Invalid reference: '{{tasks.env-HLQ_UNIT_TEST_get_total_rec_count.values.total_rec_count}}'. '{{tasks.env-HLQ_UNIT_TEST_get_total_rec_count.values.total_rec_count}}' is unknown.

please suggest how to fix it . My dependency syntax is little different than yours. The syntax you proposed was giving error.